Gilson Opal - Opal Shop
Rough Lab Created Opals and Synthetic Opal- Opal Types - Chemical Composition, Stability and Processing
- Gilson-like Synthetic Opal: 100% Silica, High Temperature Stable, Diamond Tools
- Fine Crystalline Lab Opal (Aurora Opal): 20% Silica, 80% Polymer, Stable up to 140°C, Carbide Tools
- Coarse Crystalline Lab Opal: 20% Silica, 80% Polymer, Stable up to 140°C, Carbide Tools
- Synthetic Opal (Impregnated): 80% Silica, 20% Polymer, Stable up to 140°C, Diamond Tools