Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Green / Blue Pattern: Pinfire Weight (ct): 27.1 Dimensions (mm): 27x17x5 Brightness rating: Brilliant Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO7 BO-7 Video