Strongly dichroic pink with pinch of purple or orange, emerald cut#711

A complex mixture of pink,purple and orange for wooden effect, emerald cut. Strongly dichroic emerald cut with richer ends that float between purplish and orangish pink. Slightly brown in a/b axis color makes the stone look wooden. This 7.40 carat is eye clean and has fine crystal.

I have seen this combination of a richly colored c axis with some shade of pink and a pale a/b axis with an off color pink.  Looking hard I think that the a/b pink has got a little brown in it.  Now it would be nice to orient every tourmaline to get the best color, but it was not reasonable with this piece of rough.  Too much material would have been ground away and besides, it would not make as different a pink as letting the table be parallel to the c axis.

So I cut a large flawless piece of rough with fine crystal into a strongly dichroic emerald cut.  If I would have cut the rough in half and put the table perpendicular to the c axis, the a/b color would have been practically unimportant to the gemstone.  But with the chosen orientation, the c axis color dwells in the ends and filters down the axis to somewhat darken the middle of the emerald cut.  The a/b color makes the middle of the emerald cut look rather wooden to me because of its brownish touch.   Finally the darker ends of the emerald cut really work with the middle to make a gemstone that looks rather like a slightly purplish medium dark piece of faceted wood.  The flash in the ends is somewhat restrained as I have found with pinks that have a touch of purple, but the emerald cut is quite bright.  The large emerald cut weighs in at 7.40 carats.

Last minute update.  I checked the storage box, just to be sure that I agreed on the color calls with this difficult stone.  I had pink orange rather than pink purple.  So I quickly went away from my light source and got the decreasing natural light and sure enough I saw more orange than purple.  Quandary and then the sky completely clouded over and I saw more purple again.  Therefor I am going to let the post stand as it is.  I think I will  have to take this tourmaline out behind the woodpile and make sure that it never makes me work so hard again.

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.

This entry was posted in Cutting Tourmaline, Pink and tagged , , , , , . Bookmark the permalink.

Leave a Reply