Synthetic Opal Rough
Custom Shape are welcomed.
Description :
Size from 1.5mm up 20mm
CHEMICAL COMPOSITION:
SI02 (SILICA) 80% RESIN 20%
Chemical Composition: SiO2.nH2O+Resin (Natural:SiO2.nH2O)
Hardness: 4 (Natural: 5.5)
Specific Gravity: 1.80-1.90 (Natural:1.98-2.20)
Heat Resistance: 130 degree C.(Natural:100 degree C.)