Oh Boy! If I had a dollar for everytime I was asked about this!
If youever look a blue or purple Tanzanite and the listing tells you that the stone is unheated or untreated.......RUN!!!!!
The rule is very simple, if the stone is not brown to a yellow-brown it has been heated! Yes folks all tanzanite is heated andif someone tells you otherwise they are either dumb as a box of rocks or lying!
I deal in thousands of carats of Tanzanite every year, some fancy colored and a heck of a lot of D Block products. It is very rare to find unheated cut stones, why you ask????The color looks a lot like baby poop. Once heated to 550 degrees a wonderful thing happens, the color changes. Depending on the depth of brown coloryou will wind up with blues and purples.
Ask me sometime to send a pic of a unheated round cut stone, I have a 4 ct hereand would be glad to share what onelooks like!
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I have a very very very rare unheated one which has from behind all colors, and from front is 99% petrol blue with cornflower to paraiba blue sparkles. 7,50 ct and totally loupeclean.
ReplyDeletePrize: Minimum 25000 dollars.