Tag Archives: dichroic

An Oval by the Numbers

It has been a bit, but I finished a tourmaline gemstone today that is worth commenting about.  The rough was a pretty average piece of dichroic brownish gold that had be reduced significantly to eliminate a major flaw.  And I … Continue reading

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100 % Niagara White Grape Juice In An Emerald Cut Tourmaline?

I am writing this on February 2, 2014 and the availability of rough tourmaline  has never looked worse in my opinion.   Between wars and competition from commercial processors of rough for mainly Eastern buyers, the amateur cutter, like myself,  encounters … Continue reading

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Cutting Mr. Ugly, a challenge in concentration.

I was out of worthwhile tourmaline to cut this last summer and a friend of mine stepped in and sent me some rough.  On top of what was on the storage bags (weight, dimension etc.) my friend wrote his opinions … Continue reading

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A dynamic tidal basin of color, yellow, orange, brown, purple, pink round

It is nice to finish a smaller standard round brilliant of 1.75 carats without having anything to pull my hair out for.  The stone is probably rich in manganese of different valence states and high manganese can lead to a … Continue reading

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Dissecting a Dravite Hot Off the Lap.

I am continually amazed by the variety of dynamic colors in tourmaline.  And shifts in color than can make a less desirable color in gemstone still blaze with a unique statement.  And a unique tourmaline certainly gets my attention. The … Continue reading

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A golden dichroic oval that is eye candy.#290

I like bright medium gold, like this oval has, in the tray.   It doesn’t need bright light or even being that awake to pick it out and appreciate it.  This oval has a significant amount of dichroism.  The paler … Continue reading

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Medium dark tone level pink with a touch of purple, oval.#284

This oval appears to be very slightly included.  Again the inclusion have no effect on the beauty of the gemstone. It has fine crystal, but its medium dark tone level and touch of purple moderates the stone’s flash.  It is … Continue reading

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Dichroic orangish pink oval with a bright clean look.#280

This is a nice bright flashy oval that is some combination of pink and orange.  It is not dominated by brown and appears to be eye clean.  The dichroism shows up as slightly darker ends, but is not that important … Continue reading

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Brown did you hear me, I said brown, but not dull, oval.#279

I think this good sized oval is one of only two gemstones in the collection that deserves to be just called brown.  It is obviously dichroic with its table being cut perpendicular to the principle axis (c).  The a/b axis … Continue reading

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Dichroic orangish pink oval#277

This oval has darker ends and is obviously cut from dichroic material.  Still the medium tone level does permit any problems with flash.  The pink tends to dominate the richer toned ends while the orange tends to dominate the middle.  … Continue reading

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Dichroic medium toned pink with purple enrichment, oval#274

This pink is more complex than the average highly saturated pink gem.  Its purple shade both darkens it and makes the color more dynamic.  The ovals medium plus tone level and touch of purple reduces the flash level to a … Continue reading

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slightly included, green powerhouse, emerald cut, Afghanistan#446

Viva La Afghanistan and its tourmaline.  This hunk of an emerald cut is pure tourmaline heaven. Now it is slightly included and I can see those pesky disturbances in the force, deep in this flashing well of green, but it … Continue reading

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Open ended medium tones blue green emerald cut.#440

This is the type of emerald cut that is not rare in the collection.  It probably came from Afghanistan and is very pretty without being overtly flashy.  It is completely open and is probably eye clean.  There really is nothing … Continue reading

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Barion cushion cut, dichroic, blue green, yellowish green colors, Afghanistan.#435

This is a nice Barion cut that works well with open ended tourmaline, that has enough depth to cut it without excessive weight loss.  The green c axis dominates the cushion while the blue a/b axis fills in the sides.  … Continue reading

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Smaller emerald cut with dichroic green and yellow green color.#434

This emerald cut has normal angles and an open yellowish green c axis.  The a/b axis is a medium green and the overall tone level is moderate.  It appears to be eye clean and with fine crystal.  It came from … Continue reading

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Open ended bright, medium toned, green emerald cut, Mozambique#431

Looking at this bright medium toned emerald cut reminds me of my problem with propagating flaws in the green Mozambique material I got about ten years ago.  This gemstone has a quite visible, residual, radial flaw flashing at me.  I … Continue reading

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Straight lace blue with open ends, emerald cut.#530

Many of the blues that I have and love have either a rich sapphire blue look or sing of the tropical waters.  This straight laced blue follows a more stalwart path to success.  It does not play with green much … Continue reading

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Bare dichroic, medium toned, slightly bronze, green emerald cut.#429

This emerald cut is oriented with the c axis and its bronze color across the stone rather than in the ends,like the vast majority of emerald cuts.  Since the stone is barely dichroic in tone values, the bronze color and … Continue reading

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Barely dichroic, medium toned, blue modified green, emerald cut.#428

This emerald cut has a sophisticated green that plays a bit with blue.  It is completely open and barely dichroic.  Still it is not eye candy and it may have just a touch of gray to keep it in line.  … Continue reading

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Open ended flashy emerald cut with a bit of olive in the color.#427

This is a nice smaller emerald cut with normal ends and a good amount of flash.  The c axis is sort of a olive bronze that gives the stone a below average color.  It does appear to be eye clean … Continue reading

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Beautiful completely open dichroic green emerald cut. Afghanistan#426

Now I love a great green in a closed ended, emerald cut, but when you see the true potential of green tourmaline in a completely open gemstone with mixing dichroic colors, it is big step up.  Afghanistan again claims the … Continue reading

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Very bright bronze and green, dichroic, emerald cut.#402

The posted stone, emerald cut, 1.13 carats. Older cut stone, round, .83 carats  Same material. I like a stone like this very bright emerald cut.  It has a very good green c axis color and a more muted bronze a/b … Continue reading

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Dichroic medium light yellow green emerald cut.#407

The ends of this emerald cut are a deeper yellow green, while the body of the gemstone is a medium toned green.  It is a nice open gemstone that is only moderately dichroic.  It weighs .60 carats. Bruce

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Included, dichroic, medium dark green trilliant cut.#1187

Now I am not saying the I prefer included stones, to the pure joy of bright, flashing, eye clean perfection, but some inclusions don’t bother me as much as they use to.  This trilliant has a great dichroic green.  But … Continue reading

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Fully open, slightly dichroic, spring green emerald cut.#1169

Over the years of cutting green tourmaline with every degree of darkness down the c axis,  I have really come to appreciate an emerald cut like this one.  It is slightly dichroic, but the c axis is wide open and … Continue reading

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Dichroic, but open ended snappy green emerald cut.#1157

This emerald cut has a little less than a medium tone level to set off a yellowish green to bluish green, flashy, color.  It appears to be eye clean and with fine crystal.  It is only mildly dichroic and has … Continue reading

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Standout Dichroic blue green oval#1141

Most of my later, higher number trays, are a mixture of gems as I cut them and not the ordered field that my son put together after the last Carnegie Museum show.  With the desire to post information about every … Continue reading

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Great blue green with a few visible growth tubes oval.#1138

I really like this medium plus tone level of bright blue green color.  The gemstone has one fault. There are a few quite visible growth tubes deep in the culet that parallel the sides of the oval.  I remember thinking … Continue reading

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Darkly toned, dichroic blue green oval.#1136

The ends of this long ratio oval are darker than the middle of the oval because it is dichroic.  Both colors work together well and are nice shades of blue green.  The gemstone has a number of faint inclusion and … Continue reading

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Medium toned, blue green, dichroic gemstone is a droplet of color.#1133

This standard round brilliant has an interest mixture of the two dichroic colors of blue green and yellow green.  It appears to be eye clean and with fine crystal.  It weighs .54 carats and is a droplet of color. Bruce.

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Peach with a pink shadow, dichroic emerald cut.#1116

This is a classic tourmaline gem.  An emerald cut with richer ends and a blend of two colors peach and pink.  I confess that I would cut emerald cuts even if the rough wasn’t ideally suited for them, at times, … Continue reading

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peach pink medium lightly toned emerald cut.#1107

You can see that this gemstone is a slight dichroic peach pink.  The ends of the emerald cut are slightly darker than the sides, but the gemstone is very open.  It appears to be eye clean and with fine crystal.  … Continue reading

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Dichroic forest green round#146

Face up this standard round brilliant appears to have a nice even medium dark forest green (green with a blue touch), but it is hiding the truth.  When I turned it over to check for inclusions/flaws etc. and rotated it, … Continue reading

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Strongly dichroic forest green round.#139

Most of the smaller rounds and many of the larger ones are cut with their table perpendicular to the c axis (principle axis).  This is to get the best level of tone and an even color, face up, in the … Continue reading

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Distinct slices of pie shaped alternating color, green, golden green round.#183

This standard round brilliant was cut with its table parallel to the c axis.  This produces a wheel of pie slices that alternate from green to golden green and back again when you look at the stone.  It is interesting … Continue reading

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Dichroic golden green and green round.#173

This combination of a golden green c axis and a nice medium well saturated a/b axis seems to be reasonably common with tourmaline.  This is another smaller round that has been cut with the table parallel to the c axis.   … Continue reading

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Dichroic green and yellow green Barion cushion.#164

The Barion cut definitely lifts this nice dichroic green gem up to its flashing best.  It preforms its function of mixing a nice yellow green in the ends and a fine green on its sides into a dynamic play of … Continue reading

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Dichroic golden green and green round.#163

This dichroic gemstone has the classic pie slice shaped areas with alternating yellow green and green, when you look face up at this standard round brilliant.  It appears to be eye clean and has a medium dark tone color.  It … Continue reading

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Included dichroic golden green/green round#153

This standard round brilliant has the classic pie shape alternating areas of golden green and green.  The two colors blend together pretty well and give it a pleasant mixed color appear.  Its inclusions are significant and they do effect the … Continue reading

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A medium light tone, dichroic, golden brown emerald cut.#100

This smaller emerald cut has an exceptionally nice medium light toned golden brown color.  A color that is not common in tourmaline that has lighter tones.  It is dichroic and the c axis, which is in the ends of the … Continue reading

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Darker oil green with lighter green flash, round #87

This standard round brilliant suffers from the same lack of transparency down the c axis that I have seen in some other richer tourmaline.  This effect manifests itself by the stone having muted flash under the table, while brightly flashing … Continue reading

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A bit of mint covered in chocolate, dichroic round. #88

When I came to this small round that was cut years ago, it made me pause.  I have written golden green on the back of its storage box ,but I am seeing a more complex picture than that.  This standard … Continue reading

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Golden Green Dichroic Round. #86

This standard round brilliant has a great well saturated golden yellow principle, c axis and a paler a/b axis that is yellowish green.  The mixture produces a medium dark tone gemstone with slices of pie shaped area of both dichroic … Continue reading

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A most unusual pastel yellow orange round.#73

It is hard to tell exactly what is going on in this unique gemstone.  It is a standard round brilliant that from the back appears not to be zoned.  Therefor the flashes of pastel orange and pastel yellow must be … Continue reading

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Dichroic rich golden color in a droplet of color. #65

You can see both dichroic colors face up in the rich golden colored droplet of color.  But the paler a/b axis color is completely dominated by the rich medium toned golden c axis color.  The round appears to eye clean … Continue reading

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longer ratio, blue green emerald cut with steep ends. #400

This longer ratio emerald cut has blue green color and is very dichroic.  It has steep ends that help minimize the darkness in the ends of the gemstone.  It appears to be eye clean and have great crystal.  A fine … Continue reading

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Classic bright saturated green with dark ends emerald cut.#399

This is a quintessential example of a classic green tourmaline taken to perfection.  Its central color is a bright grass green, but it is so dichroic that the ends are completely dense.  To generate flash in the ends and minimize … Continue reading

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Excellent completely open dichroic green emerald cut.#392

This dichroic emerald cut has a great well saturated green c axis on the ends and lighter blue sides.  The overall impression of the stone is of a bright flashy medium toned green with a touch of blue.  The stone … Continue reading

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Completely open, medium light tone, green emerald cut.#379

The emerald cut has a wonderful tone level and a green that strikes me as watery, without any blue in it.  It dichroic colors appear to be the same color except that c axis is darker.  The stones ends flash … Continue reading

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Medium dark tone, hexagonal emerald cut shaped, green.#374

This is the only example of this different back on an emerald cut shape, in the collection.  It worked and gave a different radiating flash than an emerald cut’s flash, but I still prefer the old fashion emerald cut.  It … Continue reading

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Outstanding, medium toned, well saturated, blue green emerald cut.#373

This emerald cut is completely open and flashing.  It is slightly dichroic, but from face up, I can not see any darkness or difference in color in the ends from the saturated blue green color on the sides.  It is … Continue reading

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A moderately dichroic blue green emerald cut.#369

This medium toned emerald cut definitely has richer green ends and rather pale bluer green sides.  The green ends dominate the stone, so I would call it a green with an overtone of blue.  The ends though darker than the … Continue reading

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Moderate dichroism and tone in a blue green emerald cut.#368

When the sun shines on this moderately toned blue green emerald cut you can easily see the dichroism.  The more greenish ends are distinctly different from the blue green sides.  It has a somewhat muted color, that may be result … Continue reading

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Slightly dichroic, but not closed, medium dark blue/green emerald cut.#367

This is a very nice medium dark toned blue with an overtone of green.  The color is flash driven and saturated.    It appears to be eye clean and have a fine crystal body.  The dichroism causes some darkening of the … Continue reading

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A mildly dichroic yellower orange, droplet of color.#635

This is a bright and flashy,  yellowish orange, droplet of color.  Where the three oranges that competed in the contest, to see who was the best orange in the droplet of color group., were purer orange, this one is too … Continue reading

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Medium toned sea foam from Afghanistan, droplet of color#626

This standard round brilliant was cut from the lot of high quality sea foam I obtained from Afghanistan.  It is eye clean and medium toned, but really too small to show the dynamic interplay of the blue green and yellow … Continue reading

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A great open blue green droplet of color.#604

How can I, a cutter that has scaled such tourmaline pinnacles, call a smaller standard round brilliant with a reasonably common color and tone level great, because it is.  Size does matter with tourmaline, though certainly not as much as … Continue reading

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A Dichroic, Gold Droplet of Color#794

This standard round brilliant was cut from a lot I purchase years ago, that only contained 1 gram pieces and smaller.  The rough is dichroic with a darker gold c axis and a pastel a/b golden yellow.  This gemstone is … Continue reading

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A sea of color in a lower transparent round. Droplets can’t pass it by.#548

This standard round brilliant just doesn’t have the crystal to shine.  None of its flaws flash or are distracting.  But they help keep this gemstone’s beautiful, blue green color, from lifting  it into being a pinnacle of power.  It  weighs … Continue reading

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Dichroic pink with growth tubes emerald cut.#527

Imperfections in a gemstone do not always make it less beautiful or interesting.  Cats eye in tourmaline that are produce by dense formations of growth tubes is a prime example of that beauty and interest in tourmaline. The posted highly … Continue reading

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Slightly sleepy, included, dichroic, blue oval.#518

I usually think of sapphire and garnet when I hear sleepy, but that is what this oval is.  I can see both dichroic blues in the gem’s flashes and they are not exceptional dark.  But the pizazz is not there.  … Continue reading

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Slightly graded color in a slightly included, dichroic, peach emerald cut.#517

The title of this post says a lot.  With all of it, the bottom line is, it is a pity that I don’t have more peaches like this one.  The darker c axis ends are redder than the middle.  The … Continue reading

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Slightly dichroic peach emerald cut#507

This cute smaller emerald cut looks a lot like a topaz I cut years ago.  It has darker peach ends and a moderately lightly toned center of pastel peach.  It is eye clean with excellent crystal for a peachy deal.  … Continue reading

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Slightly included medium forest green, oval#728

I think that this medium toned forest green oval has just a touch of blue.  It has a slight flaw close to the  girdle, but it should not weaken the stone.  The rest of the gem is eye clean with … Continue reading

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Dichroic golden orange with yellow mate, droplet of color.#723

This is a very nice standard round brilliant that is dominated by its c axis color of golden orange, that still must share some of the spot light with the a/b axis yellow color.  This color distribution is caused by … Continue reading

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Decent lavender without copper emerald cut.#715

This emerald cut will not win any prizes for cleanliness or excessive brightness since its crystal is below average, but its color assure it a place in the collection.  This is one of my better non-cuprian purples and it is … Continue reading

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A four slice pie of a pink, dichoric, round.#714

I would have cut this standard round brilliant with its table perpendicular to the principal (c) axis if it was reasonable.  It wasn’t, so I cut the emerald cut with the table parallel to the c axis.  With that orientation  … Continue reading

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An emerald cut with a greened bronze color.#713

Now a collection of tourmalines that wants to be inclusive can not only go for the eye candy in the world.  Besides I wouldn’t have a lot to cut if every stone had to have great commercial potential.  This dichroic … Continue reading

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Strongly dichroic pink with pinch of purple or orange, emerald cut#711

I have seen this combination of a richly colored c axis with some shade of pink and a pale a/b axis with an off color pink.  Looking hard I think that the a/b pink has got a little brown in … Continue reading

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A slightly dichroic minty green, droplet of color#709

Green standard round brilliants are not as common as you might think because of problems with dichroism.  Either the c axis is too dark to cut a round or one of the axis does not have a desirable color.  So … Continue reading

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A golden oval that rests in brown.#290

This modest gemstone has a nice golden flash, but is darken by brown when the flash passes.  It is moderately dichroic with darker tones of gold in the ends of the oval.  It appears to be eye clean and with … Continue reading

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An incredibly dichroic mahogany oval#289

I have been waiting to post about this longer ratio, deeply cut oval.  Face up the dravite, a trade name for brown tourmaline,  looks like many of the brown gems I have posted about, with the possible exception that its … Continue reading

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Dichroic, medium toned, pink orange oval#280

This medium toned oval has a nice complex nature.  The pastel pink orange blends nicely with the pastel pink orange to make a medium toned, dichroic gemstone.  It appears to be eye clean and of a fine crystal.  It weighs … Continue reading

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Smaller, Dichroic, Pink Oval#277

This smaller oval is strongly dichroic and the middle of the stone is much paler than the ends which are a nice medium pink tone.  This definitely gives a different look to the stone.  It is eye clean and with … Continue reading

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A definitely dichroic pink oval.#274

This nice sized, dichroic, pink oval was cut with the table parallel to the a/b axis.  This causes a band of lighter pink to dominate the center of the oval.  The ends of the oval are a much richer, bright … Continue reading

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Slightly included, medium toned, bright pink oval#265

This oval has a slight inclusion toward one end of the oval.  It is close to the girdle and does not effect the beauty of the gemstone.  I think that the tourmaline is slightly dichroic, with a slightly darker pink … Continue reading

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This is the mother of all greens in the collection, Barion cushion.

In every lot there has to be the biggest piece of rough.  The rough that cut this large Barion cushion was by far the biggest piece of tourmaline in the lot I bought from Afghanistan.  It was not only the … Continue reading

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Included pale peaches and cream oval

This slightly included oval appears eye clean face up.  The gemstone appears to be dichroic with light peach in the middle of the stone and a cream in the ends.  I am sure that you can come with other names … Continue reading

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Dichroic Orange Barion Cushion Cut

This is a great gemstones.  In natural light, the difference between the dichroic colors is pronounced. (The lighter toned orange being in the middle of the gem.)  The a/b axis is a medium pastel orange and the c axis colors … Continue reading

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Outstanding Dichroic Barion Cushion Cut Afghanistan

This Barion cushion cut has everything you would want in a dichroic blue green/yellow green gemstone.  The blue green is in the middle of the cushion with the the yellow green in the ends.  The medium tone value is just … Continue reading

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Dichroic greenish yellow eye candy, emerald cut

One of the features I love about color in tourmaline is how different a color such as yellow green can look/feel in different gemstones.  I think there are at least three different sets of conditions that can produce a yellow … Continue reading

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Beautiful slightly dichroic green Barion Cushion

This is a beautiful gemstone.  It has a medium dark tone and a green that is a well mixed blend of a slightly yellower and slightly bluer green that are not very different in tone level.  It is eye clean … Continue reading

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We will call it Pink, but is a lot more, dichroic emerald cut.

Being dichroic has its ups and downs with tourmaline.  Dark ends can be an effort and pinks can loose their heat with a browned a/b axis color etc.  But then you can hit a home run and actually get around … Continue reading

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Snappy meium toned yellow with slight touch of orange emerald cut

This is how a yellow should look, like eye candy.  And this emerald cut is just that, but it can not claim the yellow honors completely, because it has a touch of the orange roaming around.  The orange comes into … Continue reading

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Dichroic medium toned brown, modified emerald cut.

In an attempt to use a cut that better blends the stones two dichroic colors, together I used a modified emerald cut.  The cut does not demand as much depth to the gemstone as a Barion cushion and it is … Continue reading

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Great Barion Cushion in Dichroic Pink

This Barion Cut cushion has a two step crown that really opens up the stone to see all the color, the flashing pavilion can reflect.  The lighter pure pink is on the sides of the cushion, but it is the … Continue reading

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Medium Dark Toned Yellow Green Oval

This oval is dichroic and the ends are a bit greener than the sides.  The cut effectively mixes the colors together well.  This yellow green oval is flashy for a darker toned stone.  It weighs 3.04 carats. Bruce

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Strongly dichroic purple (Blackberry Bliss) Barion Cushion Cut

After awhile the dealers I dealt with out of Africa realized that I was a buyer of something different in tourmaline.  If they could just come up with  a good attempt at “different color” it didn’t have to be commercial … Continue reading

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Smaller dichroic reddish brown emerald cut.

This dichroic emerald cut has rich reddish brown ends and moderate, browner sides.  The sum of the colors produces what I like to call mahogany.  The stone has a darker tone, but the mahogany is interesting in stronger light or … Continue reading

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Green c axis and golden brown a/b axis emerald cut

This smaller emerald cut tourmaline has a distribution of color that I think is unique to tourmaline.  Its c axis is very nice mid toned yellowish green and the a/b axis is a golden brown.  In this emerald cut the … Continue reading

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It is a pitty that this classic peach tourmaline oval is not bigger.

I like peaches and this pastel approximation of their color looks delicious.  It is dichroic and both of the peaches blend well in their creamy world.  The longer ratio oval appears to be eye clean and with fine crystal.  It … Continue reading

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Smaller, Open Ended Dichroic Green, Oval

This middle of the road green oval has refreshingly open ends.  Both dichroic color are green and blend together nicely with the darker color in the ends.  It appears to be eye clean and has fine crystal.  It weighs .80 … Continue reading

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Dichroic peaches and cream oval

This rather round oval is obviously dichroic.  Both colors are shades of peach with the darker peach being in the ends of the oval.  Now I use peach as a color name for pastel orange of moderate to low levels … Continue reading

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Olive green under the girdle and forest green around, oval

I have posted before about an interesting phenomenon of decreased transparency down the c axis.  This green gemstone is an excellent example of that phenomenon.  Under the table, which is perpendicular to the c axis, is a bit darker olive … Continue reading

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A great dichroic orange in a great shape, shield cut

This orange shield cut has a two step crown, that helps open up the stone to see its great color.  I don’t cut a lot of shield cuts and it is nice that this popular shape has a fine example … Continue reading

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Open Dichroic Orange Oval

The selection of rough to cut this collection has never had an organized method to it, except for purchasing the best and most diverse set of color in tourmaline I can find and afford.  What that really boils down to … Continue reading

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A faintly dichroic green oval

This oval is a very nice green and is only faintly dichroic.  This lets the ends of the oval be nice and flashy.  Still I don’t think that the c axis is aliened with the long axis of this oval … Continue reading

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What is the difference between rusty yellow and peach pink? Dichroism.

This is a great oval and I am glad that I put the extra effort into a “supper nova” pavilion that makes  a deep pavilion.  It has a three step crown that is relatively shallow in this stone.  This adds … Continue reading

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How Green is My Tourmaline, VERY, emerald cut

This green emerald cut is made from a dichroic crystal, but the emerald cut keeps the darker yellower green c axis color pretty well isolated in the ends.  The central window of the gemstone focuses on the really nice a/b … Continue reading

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An Oval Dichroic Pink that stays Pink

This oval wants to be pink and though it displays two dichroic colors, both are shades of pink.  It has a medium tone level and fine crystal.  No inclusions bother its flash.  It weighs 2.32 carats.  I have indications of … Continue reading

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Darker greenish yellow oval

This darker greenish yellow stone has a moderate amount of flash.  It is dichroic and has some light yellow green color in its ends.  An eye clean, good quality body helps to make this an attractive gemstone.  It weighs 2.90 … Continue reading

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Large Barion Cut Spruce Green Cushion.

I have a friend that I work with to make beautiful jewelry.  He is an excellent goldsmith and I hope to have some of his work with my stones on this site.  He would look at my collection, which he … Continue reading

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How green is my grass with a bit of inclusions, droplet of color

I realize that green tourmaline is recognized as generally a flawless gemstone, but lighter toned exciting greens generally have some inclusions.  This standard round brilliant is just a fine grass green.  It is dichroic so the grass tends to flash … Continue reading

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A dichroic orange of pastel and bright tones. droplet

This standard round brilliant has a rare saturation in orange that is not dimmed by desaturation to brown under different white lights.  It is dichroic, but both colors , one a pastel and the other a bright orange, mix to … Continue reading

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Dichroic yellow green and yellow brown droplet of color.

There has been quite a bit of looking at this standard round brilliant stone before its color was figured out.  At first glance it seemed almost like a gray, but then brownish flashes appeared.  Now that doesn’t make a lot … Continue reading

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Dichroic, orange on the red side, droplet of color

This standard round brilliant has a dynamic movement of color.  It is dichroic and on the reddish side under yellowish light.  It appears to be eye clean and with good crystal.  It weighs .62 carats and is a welcome addition … Continue reading

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Fascinating dichroic orange round

Orange can be a fascinating color in tourmaline.  My eyes had taken a healthy swig of this standard round brilliant when I realized that this gemstone is highly dichroic.  I had missed it at first because both colors are ORANGE.  … Continue reading

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A fine pastel dichroic green with a few precks deep in the round.

This dichroic pastel green is dominated by the interplay of a clean blue green and a richer yellow green which is probably the c axis color.  It has a few deep inclusions that are difficult to see.  It has a … Continue reading

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Smaller dichroic green oval

This dichroic oval in a mixture of bluer and yellower greens and is nice to see in an oval.  It is darker than ideal, but still displays it color nicely.  It appears to be eye clean and weighs 1.14 carats. … Continue reading

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Complex color of yellowish red orange round.

I think that this is a dichroic standard round brilliant gemstone.  I see redder flashes as I turn the basically medium toned,yellowish orange gemstone around.  It appears to be eye clean and has fine crystal.   It weighs 4.07 carats. I … Continue reading

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A Dichroic Dancing Green Round.

This standard round brilliant is a very active gemstone.  It is definitely dichroic and not cut with the table perpendicular to the table.  This works very well here because both colors are of similar color and tone value.  The dynamic … Continue reading

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Dichroic, blue green droplet

This standard round brilliant has dynamic color, with both a dichroic effect and shifting from greener to bluer. It appears to be eye clean.   It is still on the dark side of good, but an interesting gemstone none the less.  … Continue reading

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Average clean dichroic green round. Droplet accepted.

The droplets try and take the average as well as the exceptional into their group.  This standard round brilliant was very pleased to accepted with its average dichroic green color.  It is clean, but has only average brightness for a … Continue reading

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Moderate Dichroic Green Oval#242

This is a very transparent green oval, with typical dichroic coloring.  It appears to be eye clean and with the type of crystal that would make it try and disappear in a glass of water.  It weighs 1.93 carats. Bruce

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Moderate Dichroism in Green Oval#241

This gemstones gains quit a bit from its dichroism.  This because its tone in the ends of the oval are quit moderate and the overall stone shows the two colors well.  The typical c axis color is yellower with the … Continue reading

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Darker ends on smaller oval#239

This smaller oval has a nice blue flash in the middle of the gemstone and darker yellowish green ends.  It is still flashy and really fires up under incandescent lights.  It weighs 1.06 carats and appears to be eye clean. … Continue reading

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A bit toned down dichroic green oval#235

This oval does not seem to share the same level of visual impact as other medium toned dynamic greens.  Still it is an attractive stone that would make a nice ring stone.  It appears to be eye clean and weighs … Continue reading

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Spicy mixture greens in an oval#234

  Another find member of a large family of spicy dynamic green tourmaline.  The  c axis is the yellower color and the bluer color is the a/b axis color.  I always put the a and b axis together because they … Continue reading

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Definite Dichroic Green Oval#232

This oval shows classic area of yellow green and bluer green that comes from dichroism. (The ability of the stone to separate light into two rays that travel different paths threw the stone and produce different colors.)  This gives the … Continue reading

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Very Dichroic Green Oval

The two dichroic colors in the this oval are very distinct, while still being green.  The c axis in the ends of the ovals are a nice medium forest green while the a/b color in the middle is a yellowish … Continue reading

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Very Nice Green, Clean, Oval

This oval is a great dynamic mixture of dichroic green colors.  The oval appears to be clean and has find crystal.  It weighs 2.15 carats and has a medium dark tone level.  Just right for a great stone.   Bruce

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Very Nice Green Oval with Growth Tubes.

This oval is a great combination of medium rich dichroic greens that is spicy and good crystal.  Its one drawback is a group of growth tubes (long defects in growth parallel to the c axis).  The reflect light and are … Continue reading

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Darker Ended Dichroic Green Oval#213

A very nice rich green with good saturation is the principal color that can be seen in this oval.  The darker yellowish green in the ends, just appear dark unless you have a strong light.  The cause for the two … Continue reading

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Moderate toned dichroic green oval#208

This oval is bright and flashy.  The darker color in the ends is definitely bluer than the paler blue on the sides.  It appears to be eye clean is an above average, attractive gemstone.  It weighs .79 carats. Bruce

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Dark Dichroic Blue Oval#206

The tone value of this smaller oval is high.  It is dichroic, with the darker color being a good sapphire blue, while the lighter color is a decent medium light blue.  It appears to be eye clean and weighs .83 … Continue reading

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Darker Dichroic green oval#204

This darker, yet flashy oval is quite dichroic.  The ends of the oval show a really nice medium dark grass green and the sides of the oval show a brownish yellow green.  It appears to be eye clean and has … Continue reading

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A Pink, Masculine and Dichroic Brand Emerald Cut#1086

Now I am probably pushing the envelope, but I believe in freedom from the tyranny of color limitations where ever I find it. There is nothing dainty about this pink and men should be comfortable wearing it in a ring … Continue reading

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Clearly Dichroic from fine Grass Seed, Round#1064

This is the type of green tourmaline I love.  With open ends in a rounded frosted pebble, I had more freedom to cut what I wanted and be rewarded, in this case, with a darker green and yellow green all … Continue reading

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Average Dichroic Pink Oval#1043

  I can easily see a pale pink and a richer c axis color in this gemstone.  It does a good job of mixing the colors and the result is a solid average pink.  It is eye clean and has … Continue reading

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Definitly dichroic green droplet of color.#1019

  This bright medium grass green droplet has darker weeds mixed in it  that makes for a lawn with nice dynamic color.  It seems to be eye clean and weighs .94 carats.  It is a very nice addition to the … Continue reading

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Big pink with c axis in ends emerald cut.#1014

  The emerald cut is dominated by the dichroic a/b axis.  This color is a very pale pink that shows a touch of cream.  The preferred color is the darker pink c axis, with a better saturation, but it was … Continue reading

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yellow gold dichroic oval

  This yellow gold dichroic oval is open and eye clean.  There is not a speck of green anywhere to be found and I call this one yellow.   I love to yellow without green because it is rare.  Unfortunately … Continue reading

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How Green is my Afghan Gem#988

  This is a beautiful gemstone.  Its bluer a/b axis blends beautifully with the more yellow green c axis.  I said blend because the tone level of both axis are the same and that gives such a light bright feeling … Continue reading

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