Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Freeform Color: Pink / Green / Blue Pattern: Pinfire Weight (ct): 0.85 Dimensions (mm): 8.5x5.5x2.5 Brightness rating: 8 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK29-CY