Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green / Blue / Orange Pattern: Broad Flash Transparency: Translucent Brightness rating (1-5): 4 Size (mm): 24x14x4 Weight (ct): 9.9 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY13