|Dimensions (mm)||not provided|
|Weight (carats)||18 carats|
LONDON BLUE TOPAZ
This is a specimen of chunky topaz rough ideal for faceting .This material was treated in the usa to strict standareds-This stone is a dark blue colour known as London blue.The treatment is permanent.
Mohs scale 8
Weight 17.80 CTS APP
Size 18 x 16 x 10 MM APP.
Treatments-When heated, yellow topaz often becomes reddish-pink. Only stones of a brown-yellow color yield the pink; the pale yellow ones usually turn white. The pink color is stable. Topaz can also be irradiated, turning the stone blue, ranging from a light pure color to very dark almost electric blue
AS WITH ALL OUR STOCK YOU MAY RETURN IT FOR A FULL REFUND IF NOT PLEASED .
MEMBER OF INTERNATIONAL COLOURED STONE ASSOCIATION
|Starts||2nd Dec 2016 11:02pm PST|
|Ends||5th Dec 2016 11:00pm PST|
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