Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Round Color: Rainbow Pattern: Broad-Pin Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 9x9x3 Weight (ct): 1.4 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY52