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Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Freeform Cabochon Color: Green, Yellow, Orange, Red, Purple Pattern: Rolling flash Weight (ct): 3.25 Dimensions (mm): 13.5x10.5x3 Brightness rating: 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK23 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Oval Cabochon Color: Blue / Purple Pattern: Flag Stone Weight (ct): 1.25 Dimensions (mm): 9.5x5.5x3 Brightness rating: 4 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK24 -
Origin: Mexico Opal Type: Fire Shape: Oval Cut: Faceted Body Color: Dark Orange Fire Color: Rainbow Transparency: Transparent Fire Visibility (1-5): 5 Size (mm): 10.5x7.5x5 Weight (ct): 1.9 MOHS Hardness: 5-5.5 Treatment: Not treated GbG ID: MO257 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Freeform Color: Rainbow Pattern: Broad flash Weight (ct): 6.7 Dimensions (mm): 25x12x2.5 Brightness rating: 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK25 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Freeform Color: Green / Purple / Orange Pattern: Broad Ribbon Weight (ct): 6.25 Dimensions (mm): 16x13x4.5 Brightness rating: 4 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK26 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Narrow Oval Cabochon Color: Rainbow Pattern: Ribbon Weight (ct): 1.4 Dimensions (mm): 10.5x6.5x4 Brightness rating: 4 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK27 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Long Oval Cabochon Color: Rainbow White Pattern: Ribbon Weight (ct): 4.6 Dimensions (mm): 20.5x8x4 Brightness rating: 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK28 -
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 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Freeform Color: Rainbow Pattern: Mix Weight (ct): 8 Dimensions (mm): 23.5x15x3 Brightness rating: 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK30 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Freeform Cabochon Color: Green / Blue Pattern: Broad flash Weight (ct): 3 Dimensions (mm): 14x10.5x3.5 Brightness rating: 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK33 -
Origin: Queensland, Australia Opal Type: Solid Black Opal Shape: Oval Cabochon Color: Green / Blue Pattern: Floral Weight (ct): 1.2 Dimensions (mm): 10x8x2 Brightness rating: 4 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BK32 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Orange / White Pattern: Broad Flash Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 24x13x3.5 Weight (ct): 8.25 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY02 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green / Blue Pattern: Broad Flash Transparency: Translucent Brightness rating (1-5): 4 Size (mm): 15x11x2.5 Weight (ct): 3.20 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY03 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green / Orange / Blue Pattern: Floral Transparency: Translucent Brightness rating (1-5): 4 Size (mm): 14x11x3 Weight (ct): 3.45 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY04 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Orange / Green / Blue Pattern: Flagstone Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 17x13x4 Weight (ct): 7.2 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY06 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green, Blue, Orange Pattern: Floral Transparency: Translucent Brightness rating (1-5): 4 Size (mm): 16x12x2.5 Weight (ct): 3.85 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY07 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green / Orange / Blue Pattern: Floral Transparency: Translucent Brightness rating (1-5): 4 Size (mm): 23x10x3 Weight (ct): 5.25 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY08 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green / Blue / Orange Pattern: Ribbon / Pinfire Transparency: Translucent Brightness rating (1-5): 4 Size (mm): 24x10x4 Weight (ct): 7.15 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY09 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Rainbow Pattern: Flagstone Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 20x12x3 Weight (ct): 6.85 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY10 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Orange / Green / Blue Pattern: Broad Flash Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 18x13x3 Weight (ct): 5.3 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY12 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green / Blue / Orange Pattern: Broad Flash Transparency: Translucent Brightness rating (1-5): 4 Size (mm): 24x14x4 Weight (ct): 9.9 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY13 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Pink / Green / Blue Pattern: Iris Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 16x11.5x3 Weight (ct): 3.70 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY14 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Blue / Green Pattern: Ribbon Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 16x11x3 Weight (ct): 3.9 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY15 -
Origin: Coober Pedy, Australia Opal Type: Crystal Opal Shape: Oval Color: Green / Blue / Orange Pattern: Straw Transparency: Translucent Brightness rating (1-5): 3 Size (mm): 22x12x3 Weight (ct): 6.9 MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: CY17
