Click below to learn more about our Boulder Opal
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Origin: Lightning Ridge, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Green / Orange / Purple Pattern: Broad Flash Size (mm): 12x10x2.5 Weight (ct): 1.9 Brightness rating (1-5): 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO71 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Oval Cut: Cabochon Color: Rainbow Pattern: Matrix Size (mm): 18x13x6 Weight (ct): 12.2 Brightness rating (1-5): 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO66 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Rhombus Color: Green / Common Blue Pattern: Matrix Size (mm): 22x16x4 Weight (ct): 15.3 Brightness rating (1-5): 2 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO62 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Dark Blue Pattern: Floral Weight (ct): 20 Dimensions (mm): 18x14x7 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO38 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Green / Blue Pattern: Pinfire Weight (ct): 27.1 Dimensions (mm): 27x17x5 Brightness rating: Brilliant Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO7 BO-7 Video -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Square Color: Rainbow Pattern: Matrix Weight (ct): 27.75 Size (mm): 10x10x3 Brightness rating: 2 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO60-6 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Green / Blue Pattern: Rolling flash Weight (ct): 28.4 Dimensions (mm): 22x17x6.5 Brightness rating: Bright Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Undrilled GbG ID: BO47 -
Origin: Spencer, ID Opal Type: Solid Boulder Opal Shape: Cabochon Color: Green / Purple Pattern: Matrix, Straw Weight (ct): 28.8 Dimensions (mm): 37x24.5x4.5 Brightness rating(1-5): 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO57 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Round Cut: Cabochon Color: Green / Blue / Pink / Orange Pattern: Matrix Size (mm): 10.5x10.5x4 Weight (ct): 3.1 Brightness rating (1-5): 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO65 -
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 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Green / Blue Pattern: Floral Weight (ct): 33.35 Dimensions (mm): 32x15x8 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO22 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Blue Pattern: Matrix Weight (ct): 37.3 Dimensions (mm): 37x19x6 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Undrilled for pendant GbG ID: BO52 -
Origin: Spencer, ID Opal Type: Solid Boulder Opal Shape: Oval Cut: Cabochon Color: Green / Blue / Orange Pattern: Matrix, Straw Size (mm): 38.5x25x6.5 Weight (ct): 40 Brightness rating (1-5): 3 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO58 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Blue / Red / Orange / Metallic Pattern: Matrix Weight (ct): 44.5 Size (mm): 30x29x8 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO32 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Cabochon Color: Orange / Yellow / Blue / Metalic Pattern: Matrix Weight (ct): 50.6 Dimensions (mm): 34x22x7 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO20 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Orange / Yellow / Blue Pattern: Matrix Weight (ct): 52 Dimensions (mm): 30x29x8 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO30 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Blue Pattern: Matrix Weight (ct): 55.2 Dimensions (mm): 45x25x8 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treate Setting: Drilled for pendant GbG ID: BO16 -
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 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Blue / Yellow Pattern: Matrix Weight (ct): 57.8 Dimensions (mm): 32x26x7 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treate Setting: Drilled for pendant GbG ID: BO37 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Orange / Yellow Pattern: Matrix Weight (ct): 59.7 Dimensions (mm): 34x21x8 Brightness rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO31 -
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 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Rainbow Pattern: Common, Ribbon Size (mm): 18.5x15x3.5 Weight (ct): 8.6 Brightness rating (1-5): 2 Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO63 -
Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Blue Metalic Pattern: Matrix Weight (ct): 85.95 Dimensions (mm): 49x23.5x7 Brightness Rating: Subdued Transparency: Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID: BO13