yellow gold dichroic oval

 

yellow gold dichroic oval. Bright clean open yellow gold dichroic oval without green. A bit of minor chipping on the culet. A nice sized gem at 3.08 carats.

This yellow gold dichroic oval is open and eye clean.  There is not a speck of green anywhere to be found and I call this one yellow.   I love to yellow without green because it is rare.  Unfortunately it is a tad weak and has minor chipping on the culet.  One of the mechanisms (more in another post) that can produce yellow in tourmaline is caused by radiation.  I think radiation weakens tourmaline, but the yellow produced is stable under reasonable conditions.  The posted stone weighs 3.08 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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