Classic, stable green, emerald cut with dark ends and a radial fracture.

Lightly included green emerald cut with closed ends. This classic moderately green emerald cut with closed ends has a residual radial flaw. It is not visible face up, but is a weakness n the stone. The gemstone weighs 2.21 carats.

Many tourmaline crystal have radial fractures (perpendicular to the c axis) that limit the yield from a crystal.  Even if they are not noticeable in the finished gemstone because of the of its rich tone value, they should be removed, because they can in danger the physical integrity of the gemstone.  Sometimes they have been known to propagate ahead of the cutting plane and prevent the completion of the stone.  Other times if you grind fast enough you can catch it.  The exercise is not really fun.

The posted emerald cut has a light residual mark from a radial fracture in the middle of the gemstone.  It is not visible face up, but would pose a threat to the stone during setting.  The rest of the features of this stone are classic closed ended, green, emerald cut tourmaline.  It weighs 2.21 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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