Gilson (Non-Resin) Opal
Lot CS358
Color: White with red fire
Shape: Round Cabochon
Size: 8.7 mm
Total Weight: 6.08 ct
Quantity: 3 pcs (set)
Classification: Lab Grown Opal
Chemical composition: SiO2 + nH2O
Hardness (Mohs): 6.5
Specific Gravity: 2.2-2.25
Heat Resistance: 1200 C
Water: 0%
Polymer: 0%
