Dichroic medium toned brown, modified emerald cut.

Very nice,hexagonal, medium toned brown. This medium toned brown is dichroic. The hexagonal cut has a limited ability to mix the light brown and dark brown dichroic colors together. The stones is bright, eye clean and flashy. It weighs 3.63 carats.

In an attempt to use a cut that better blends the stones two dichroic colors, together I used a modified emerald cut.  The cut does not demand as much depth to the gemstone as a Barion cushion and it is less work.  The new cut worked OK, but I have only used it this time because I really did not care for its flash pattern.  The paler honey brown a/b color really dominates the side of the emerald cut shaped stone and and the darker honey brown c axis color is still mostly isolated in the ends.  With this stone’s response to the cut, I decided that I preferred to stay with emerald cuts for dichroic, but open ended tourmalines and so I did.

The posted gemstone looks like an emerald cut from the top, but has a culet.  It appears to be eye clean with fine crystal.  It is dichroic, but the c axis is not too dark and the sum of both axis is a very nice medium toned golden brown.  It weighs 3.63 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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