How Green is my Afghan Gem#988

 

Open Ended, Green. Afghan, Emerald Cut. This beautiful emerald cut weighs 5.78 carats. It is clean and bright with great transparency for a medium dark toned gemstone.

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 to a stone that is at least a medium tone level gem.  I wish that all the African greens would learn from the best Afghanistan greens on how to really behave.  I would not call this the highly prized “sea foam” tourmaline because it is too rich, but the same desirable qualities are present, with the possible exception of not being a “neon” gem.  Top quality sea foam Afghanistan tourmaline has a “neon” brightness that I have only seen in one other type of tourmaline.  That is a high quality paraiba type tourmaline. The effect can not be photographed and makes “neon” gems appear to generate more light than they are receiving, under lower light conditions.  Incandescent lighting really helps in this case as is usual with blue and green tourmaline.

This well proportioned emerald cut is clean and bright, with a weight of 5.78 precious carats.

Bruce

 

 

 

 

The

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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