A green color dot with apparent c axis transparency problems.#115

medium dark green with flash dulled by c axis lack of transparency #116 Transparency is certainly important, in even a small standard round brilliant like this green one and it shows the results of coming up short. Its medium, average color, just can not compensate and the stone is a disappointment. But the dots of color gave it a sympathy spot.

I have been finding more tourmaline with c axis transparency problems than I realized in the collection.  They have all been blues and greens.  This medium dark, small standard round brilliant seems to have joined the group of known examples.  It really hurts this small one and the dots of color took it in as their own, out of sympathy.  It weighs .43 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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