Included, flashy, medium blue round that is cuprian.

A fine, evenly included, medium blue, curpian round This deeply cut round has a fine medium tone blue color. The numerous inclusions are evenly distributed and don't flash.(two areas of haze are on opposing side of the table). It weighs 2.01 carats and it contains copper.

Some stones will always make me smile and stay with me until I can not remember them anymore.  This memorable deeply cut round started out in my possession as a water worn pebble that was sold to me as low (cab) grade material.  I knew that it was cuprian and had all the usual colors of green, purple and blue.  I started grinding away the surface and areas that were so flawed that they were useless.  I soon realized that I was going to loose all of the purple and green as I formed a round that had a moderate amount of mostly uniformly dispersed inclusions.  This had been the best I had hope for, a web of inclusions, but no major feathers or flaws.  The worst inclusion that I had to leave in is toward the girdle, but does not contact it.  This inclusion is  long, narrow and white.  It does not flash and is hard to see against the flashing background of the stone.  Did I say flashing, yes, the crystal between all those inclusions is pretty good quality.

So what did I end up with.  A round that has eight horizontally split mains on its pavilion and a deep modified step cut crown.  In other words the deepest stone I can cut with my correct/preferred angles.   The bright blue color has a medium tone value.   The blue color is not disturbed by any flashing inclusions, but there are two more clouded areas on opposite sides of the round.  And finally the gemstone really takes off into a bright shinning blue in my “secret place” by the side of a small florescent tube inside a yellowish shade.  I tested this piece with my spectrometer and it is definitely cuprian, but the response to the yellow light also indicates a cuprian tourmaline.  The stone weighs 2.01 carats.

A fine addition to the collection and success is sweet.

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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