A deep yellow green oval that is fun.

Large,Deep, Golden, Shifting to Greenish, Oval This deeply cut mostly golden tourmaline weighs 10.33 carats. It gets more or less greenish depending on the quality of the light. It appears to be eye clean and has great crystal.

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 was made, what time of the year and hour of the day are you taking as “natural” daylight?  Why do I bring this up, because it matters very much to some tourmalines like the one posted.

This larger gemstone is cut with a “super nova” pavilion and a deep three step crown so looking down threw the table you can seem to be swallowed up into its golden heart.  And holding this gem under my yellowish light the golden glow is all that I see, but there is a green streak in this tourmaline’s heart.  It varies with the “color” of the daylight and that depends on many different environmental factors in addition to the time of day etc. I have discussed.

I hate to call this tourmaline a greenish yellow, because it is so much more interesting.  It is so sensitive to the changing quality of the natural light that I feel almost as if you could keep time, like a sun dial, with it.  Now almost all yellow tourmalines are prone to getting a greenish cast under some natural lighting conditions, but this gemstone is by far the most sensitive that I have seen.   A final point, the yellow green edge varies between people quite a lot, and I am not taking about color blind people, so you may see more or less green.

This deeply cut mostly golden oval weighs 10.33 carats.  It has great crystal and appears to be at least eye clean.  Its dynamic color shifting, to more or less greenish, depending on the quality of the natural sunlight or artificial light, makes it a fun stone.

Bruce

About Bruce Fry

I was born in Summit, NJ in 1947 and graduated from Summit High School in 1966. I graduated from the Colorado School of Mines in 1970 and after spending another year in graduate school, I left to see the world of Brazil. After spending some more time discovering myself, I ended up working for the Commonwealth of Pennsylvania for 32 years as an Air Quality Engineer in the Department of Environmental Protection. I retired in 2007 and took up faceting gemstones again after a long hiatus that reached back to my twenties. I had started cutting cabochons when I was 13 and bought my first faceting machine when I was 15, but ran out of money and time until I retired.
My great love in gemology is tourmaline and the collection presented here represents my effort to get as much beauty and variety in the colors of tourmaline as I can. I was particularly lucky in being able to get unheated cuprian tourmaline before copper was discovered in gem grade tourmaline from Mozambique.

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