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Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Green / Blue / Yellow Pattern: Matrix Weight (ct): 75.8 Dimensions (mm): 56x32x5 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Undrilled for pendant GbG ID: BO50