Achroic, a colorless call in tourmaline#923

Great Achroite, colorless emerald cut This colorless tourmaline weighs 1.92 carats and is eye clean with great crystal.

Now you have to be careful when you’re evaluating color in a very pale gemstone, it can catch its apparent color from the world around it.  Now an emerald cut is a color cut, so thousands of facets and magnificent scintillation can not disguise a stones  “true hue”(I like that).   Illumination, which includes the time of day the “natural” light shows you the gem, all mater.  But in this case all that is academic, because this pure colorless emerald cut (unique in the collection in colorless) tourmaline has to be called an Achroic (old trade name for colorless tourmaline) without even a gray cast.  It is also eye clean, with a great crystal and came from Afghanistan, as many very lightly toned tourmaline do. It weighs 1.92 carats

 

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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