Round with sliced pie placement of gold and green.#992

 

Round with Pie Slice of yellow green and gold This standard round brilliant has two slices of a/b color and two slices of c axis color. The lack of mixing keeps the round from being muddy. The clean stone weighs 3.31 carats.

This standard round brilliant makes me smile.  It takes me back to my very early days on the internet when I had found a dealer who cut some tourmaline down the long axis of smaller alluvial pebbles.  I asked him why and got rather a run around and then I cut them.  It did not take long to realize that cutting them down the long dimension had made the rough appear very much nicer than it was, by minimized the dark color of the c axis.  Now when cutting a tourmaline you can have the c axis completely dominate the paler a/b color, but you can never eliminate the c axis color.  Now I have to qualify that.  If you’re willing to cut ninety degree ends on emerald cuts the c axis could be cut out, but that is  not acceptable to me.

The gem I am looking at is not from that dealer, it is too big and too nice, but it has the classic slice of pie color distribution.  By cutting the table parallel to the c axis (on the side of the crystal), you get alternating areas of a/b color and c color for a total of four slices.  People are surprised by this arrangement, but it is easy to do and it can make a pretty stone.  In this case it is not my favorite combination, yellow green and gold.  Not to give up hope for this bright pleasant gem, the mixing, even in a round, is very limited and the stone is not muddy.  This clean standard round brilliant weighs 3.31 carats.

Bruce

 

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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