Gem Resources
PO Box 62006
Minneapolis, MN 55426
Phone/Text:(612)327-7374
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Topaz White (Clear)
White (Clear) Topaz Cabochon
Refraction Index: 1.610 - 1.620
Hardness: 8
Specific Gravity: 3.53 to 3.56
Dispersion: 0.014
Treatment: None
Metal Clay, safe to fire.
Test results; Silver 1200F-1HR-OK, Silver 1475F-1HR-OK, Silver 1650F-2HR OK, Bronze 1525F-2HR-OK, Copper 1778F-30min-OK
Rounds Cabochon