Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Blue Metallic Pattern: Floral Weight (ct): 56.55 Dimensions (mm): 33.5x17x12 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO18