Opal Type: Crystal Opal Shape: Pillar and Oval Cut: Cabochon Color: White & cream Pattern: Pinfire Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 10.5x2x3 largest Weight (ct): 0.5 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: WO1