Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Cut: Doublet Color: Blue / Green Pattern:  Broad / Pinfire Size (mm): 13.5x10.5x3 Weight (ct): 3.5 Brightness rating (1-5): 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO69