Tag Archives: color-shift

Medium toned purple pink that shifts to orange pink droplet of color.#255

Don’t pigeonhole me cried the purple pink to orange pink with a desire to be a red droplet of color.  The effort to attain individual attention and independence continues in the ranks of the orange red tribe.  They have become … Continue reading

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Another peach to pink mascaraed, sliding color, round.#252

I ran into many more blue to green sliders in the collection than I ever expected, but the variety that is really spooking me is the unstable pink/red to peach/orange.  This is another gemstone that does not agree with the … Continue reading

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Well saturated, medium dark tone level, blue green emerald cut, Namibia#441

This solid, established member of the tourmaline community appears to be eye clean and with fine crystal.  The emerald cut has steeply cut ends because they are closed.  Its well saturated, medium dark tone level, blue green color does shift … Continue reading

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Rather dull yellow green closed ended emerald cut.#436

This stocky emerald cut has closed ends, but has a good amount of flash.  In the daylight its color definitely has a bronze, brownish cast in the medium dark plus toned, yellow green color.  But this is a gemstone that … Continue reading

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Medium light tone, blue green color with significant flaw, emerald cut#412

This bright open blue green emerald cut has sparkle in the ends.  It has a more shift in its color than the more common yellow greens which is pleasing.  Unfortunately this gemstone appears to have failed and there is a … Continue reading

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Slight included, bright golden yellow, droplet of color.#1198

This standard round brilliant is slightly included, but still bright and flashy.  It color is a joy and its body has very good transparency.  It verges on to an orange in some lights.  It weighs .74 carats and is a … 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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The elusive color of yellow green in the oval.#1155

At times I have used the word “dynamic” to discuss color in tourmaline excessively.  But thinking back threw the posts I have written for my site, I have not used the term that much.  Maybe it is because the pictures … Continue reading

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Included peach pink droplet of color, Brazil#1149

This round was not permitted into the collection for many years because of its heavy inclusions.  I had purchased the rough from Brazil when I started cutting again and loved the color, but couldn’t really cut a clean stone.  The … Continue reading

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Blue toward green color shifter, closed ended, emerald cut.#1139

This longer ratio emerald cut is blue in day light, but makes a strong sift toward green in my yellowish light.  It appears to be eye clean and has good crystal.  It dark tone level and closed ends makes the … Continue reading

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Another unstable pink peach oval has been sighted.#1130

Even before I set up my yellowish light and let the natural light into where I am posting, pinks, peaches, reds and oranges have been betraying me.  I examine them after they have been cleaned and placed in their storage … Continue reading

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Green to blue green, medium dark, droplet of color.#140

This is a very pretty droplet of color with a very nice, rich, shifting color between green and blue green.  It likes light as most medium dark tone gems appreciate, but it seems more open than most to more moderate … Continue reading

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Cuprian, medium toned, shift blue green round.#138

The top grade cuprian tourmaline that came out of Mozambique can be much larger and cleaner than the vast majority of Paraiba material from Brazil.  But in both deposit, included material represented the vast majority of the production.   I lowered … Continue reading

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Pastel yellow to green slider, round#643

This medium light toned pastel flirts with both yellow and green.  The cut between these colors is always difficult in tourmaline and depends in part on the individuals eyes.  Yellow is the much rare color as you will definitely see … Continue reading

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A shifty blue that has a green streek depending on the light, droplet of light.

This medium toned blue shifts to more green than expected under the yellowish light.  But boy does it love incandescent light.   So we will call it a blue green pastel, droplet of color, with visions of greatness, because it drinks … Continue reading

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Very Pale Yellow to Green, victim of wishful thinking round. (IceT for sure)#530

Now the IceT party is ready to party hard with this standard round brilliant no mater what official color I come up with.  In the morning light I see a very pale green, but there is yellow on the box.  … Continue reading

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Living with a complex color round.#503

We have a live one in this darker toned standard round brilliant.  First I see a pink purple that is very close to maroon and I begin to wonder.  Then I look at the back of the storage box and … 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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Shades of orange and pink in a deep oval.

This larger medium light toned oval is cut with a “super nova” pavilion and a regular crown.  This arrangement makes a really bright fully involved oval.  What is bright in this stone is a nice average pink to peach slider, … Continue reading

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Medium sized with a medium toned pink to peach slider, round#252

Research has shown that two areas of the visible spectrum produce shifts of color with tone level that are non-linear.  A darker line will not necessary have the same color as a lighter line even if you use the same … 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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An emerald cut with a color that looks like green vegetable juice.,

This emerald cut has a very different feel than the numerous smaller blue greens ones I have been posting about.  It has a fully transparent c axis and a complex rather watery green color under natural light.  Under my yellow … Continue reading

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This blue to green, lighter and brighter, emerald cut is very nice.

This emerald cut has a different feel to it than many of the smaller ones I have been cutting in the blue/green range of colors.  Its ends are darker, but I don’t think that they are closed.  The color goes … Continue reading

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Open Ends and Strong shift from Blue to Green, Emerald Cut

This smaller emerald cut has normal angles on the end, because its ends are open.  Open ends lead to flashy ends and having the corners cut off less.  Taken together this makes an emerald cut with closed ends look significantly … Continue reading

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Transparent pink to orange pink slider, oval

This oval stays basically pink, but has a weakness for orange.  It is a very transparent gem because of its eye clean, high quality crystal, but that is only part of the story.  Its tone level is medium and it … Continue reading

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A deep yellow green oval that is fun.

In the quest to sell lighting it has gotten popular to advertise that this “high tech” wonder is daylight equivalent.  There is not such man made light source and there will probably never be one made.  And even if one … Continue reading

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Browner more forceful orange with hint of red, droplet of color.

From a distance this standard round brilliant might appear to be a brown, but on a more personal relationship level, it reveals a complex personality.  Orange flash with a hint of red fill the rotating stone and declares its difference.  … 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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Red/Pink droplet of color

When does a pink cross the line and become red?  Tourmaline shares this problem with corundum (ruby and pink sapphire) and it can be a very personal opinion,  that will be debated forever.  I think that lightning makes a big … Continue reading

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An average tourmaline green with steep ends emerald cut.

I have cut many gemstone like this classic, medium dark toned, yellow green that drifts into blue green, emerald cut with closed ends.  The emerald cut does benefit from steeper ends, but if I have a decently large ratio between … Continue reading

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A darker drifting orange pink droplet of color

Sometimes the back of the boxes I keep the individual gemstones in, is wrong when it comes to color.  I will have to bring it up to management’s attention.  I will also check this stone’s color again tonight.  This droplet’s … Continue reading

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Smaller green emerald cut with closed ends.

There is some blue shifting in this modest green emerald cut.  It has closed ends, but is cut with normal angles.  I personally like the improved flash with normal angles even if the darkness encroaches a bit more from the … Continue reading

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Singing Pink or Orange depending on the light oval.

This stone and its larger brother (#659) have driven me up the wall too many times.  I was just singing in my mind (the cat on my lap doesn’t like me to make too much noise) how I love a … Continue reading

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Wounded pink to orange color changing oval.

Decisions, decisions and you have to make them cutting gemstones.  I have chosen with this gemstone to retain a white feather that is close to vertical with the table, in order to get a descent sized oval.  The rest of … Continue reading

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Blue No Green No Blue No Green emerald cut.

I was getting ready to post about a smaller blue emerald cut with closed ends, when I checked the back of the box and saw green.  So I checked under my yellowish light and sure enough this quite saturated blue, … Continue reading

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Great blue to green droplet

This droplet of color is a delightful shifter.  In morning light it is blue, while in yellowish light it is a mixture of green and blue that does not loose any of its tone value.  Both ends are  bright and … Continue reading

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A Blue that walks to a different drummer, Round

Most blue tourmaline really like yellowish/incandescent light.  It really fires up the stone even if the blues can tend to become greens.  Well here is a standard round brilliant that just has to be different.  I read on the box … Continue reading

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Darker tone Jumper from yellow green flash to blue flash, round.

Here is another good one.  This standard round brilliant is dark enough to have its color mainly flash driven under average lighting conditions.  I have a yellowish light and a diffused midday light to work with.  And this stone’s flash … Continue reading

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Included moderately toned blue that shifts a bit, round

This gemstone has a horizontally split main pavilion and a normal crown.  Its moderate tone level makes this stone’s inclusions quite apparent.  The inclusions are positioned toward the girdle and extended only to the edge of the table.  I work … Continue reading

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Middle of the road pink, no orange droplet#1082

  The lighting is not the best as it is morning with a gray sky and only one yellowish squiggly florescent light shinning on my shoulder.   This droplet jumps into my hand and I see a middle of the road … Continue reading

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A Natural Blue that is Shifty, Emerald Cut#1066

  I have seen it before and I hope to see it again.  A beautifully formed emerald cut with four rows of facets on the pavilion and three rows of facets on the crown.  This forms the structure to display … Continue reading

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Rich Reddish Orange Round#1044

  The tourmaline the jester has brew up a good one this time.  Not only does this tourmaline have a garnet color, but a tone level that is very believable for garnet.  It is not too dark, but has a … Continue reading

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Pad your bet with this orange pink round#1028

After dravites, brown yellows to brown oranges and all tourmalines in the brown world, (progress is being made in that area) the mixture of orange/pink is the most under appreciated color range in saturated colors.  (Achroite, colorless, I am leaving … Continue reading

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Dynamic Blue Shield Cut#1026

I can see why I have cut a number of shield cuts from this  tone level  of blue.  It makes a beautiful pastel shield cut because the blue is not dichroic.  Now I think dichroicism in tourmaline can be great, … Continue reading

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pink/orange slider for the droplets of color#1022

  Nice bright clean droplet that slides with the light from pink to orange.  It size and being a standard round brilliant insures that this pitch hitter will make the droplet team.  It weights 1.03 carats.   Bruce

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A salmon that is a bit fishy oval#1016

  I always smile when I am obviously looking at a gemstone under different conditions than when I put the gemstone’s official color on the back of the boxes they live in.  Today under a yellowish light on a gray … Continue reading

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Color Change/Shift in Red Tourmaline

Feb. 27th 2010 The first well known feature of some red tourmaline is that it de-saturates under incandescent light and turns brownish. This is not desirable and has cause the use of the variety name Rubellite to be only acceptable … Continue reading

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Oval Pink with a wisper of Purple#934

  I am looking at this oval gem under morning light and seeing a pink that has some cast to its hue, but I can’t put my finger on it.  I look at the its box and I have written … Continue reading

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A shifty Mauve thats in the Pink#902

  I don’t attach mauve to a gemstone’s color casually.  I always check color in various “white” lights,  incandescent, morning light and evening light etc. Many members of the tourmaline color world are not known for being consistent in shade,  … Continue reading

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