Lightly toned well saturated lavender oval, cuprian#41

 

A lightly toned lavender oval from Mozambique, cuprian  #41 This oval is eye clean and with fine crystal which is unusual for cuprian tourmaline from Mozambique. Its lavender color is lightly toned, but still a nice pastel that is well saturated. It weighs 5.13 carats.

The rough for the lightly toned lavender was cut from a large dark purplish red nodule that had been heated to lighten it.  It would have probably gone completely light blue if the heating continued.  The blue is from a low level of copper.  Lavender, that is as well saturated as this stone has, is very rare in tourmaline and may even require copper as a chromophore with the reddish shades from manganese.  This bright and eye clean oval weighs 5.13 carats.  I purchased the rough for this oval before copper was discovered in gem quality tourmaline from Mozambique.

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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