Click below to learn more about our Boulder Opal

  • BO71 IMG_7435shBO71 IMG_7434sh_1
    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 $75
  • BO66 IMG_7409shBO66 IMG_7407sh
    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 $75
  • BO62 IMG_6011shBO62 IMG_6012sh
    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 $25
  • BO38 IMG_3838shBO38 IMG_3837sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color: Dark Blue    Pattern:  Floral Weight (ct):   20 Dimensions (mm): 18x14  Thickness (mm):  7 Brightness rating: Subdued  Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID:  BO38 $50
  • BO-1 IMG_2871shBO-1 IMG_2870sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Green Blue Red Orange Yellow Pattern:   Rolling flash Weight (ct):    24.1 Dimensions (mm):  26x18 Thickness (mm):   6 Brightness rating:  Brilliant Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID: BO1 $12,000
  • BO-7 IMG_2970shBO-7 IMG_2967sh
     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 $2,200 BO-7 Video
  • BO60-6 IMG_6007shBO60-6 IMG_6006sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Square Color: Rainbow Pattern:  Matrix Weight (ct): 27.75 Dimensions (mm): 10x10 Thickness (mm):  3 Brightness rating: 2 Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID:  BO60-6 $80
  • BO47 IMG_3884shBO47 IMG_3885sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color: Green Blue  Pattern:   Rolling flash Weight (ct):  28.4   Dimensions (mm): 22x17 Thickness (mm):  6.5 Brightness rating: Bright Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Umdrilled GbG ID:  BO47 $1,485
  • BO57 IMG_7375shBO57 IMG_7377sh
    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 $500
  • BO65 IMG_7403shBO65 IMG_7402sh
    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 $25
  • BO69 IMG_7423shBO69 IMG_7424sh
    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 $75
  • BO67 IMG_7412shBO67 IMG_7413sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color: Rainbow Pattern:  Rolling Size (mm):  12x11x3.5 Weight (ct):  3.5 Brightness rating (1-5): 3 Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID:  BO67 $75
  • BO-22 IMG_3501shBO-22 IMG_3500sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color: Green Blue   Pattern:  Floral Weight (ct):    33.35 Dimensions (mm):  32x15 Thickness (mm):  8 Brightness rating: Subdued  Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID:  BO22 $50
  • BO52 IMG_3914shBO52 IMG_3913sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color:   Blue    Pattern:  Matrix Weight (ct):    37.3 Dimensions (mm): 37x19 Thickness (mm):  6 Brightness rating: Subdued  Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Undrilled for pendant GbG ID:  BO52 $180
  • BO58 IMG_7382shBO58 IMG_7380sh
    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 $500
  • BO32 IMG_3803shBO32 IMG_3802sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Color:   Blue Red Orange Metallic Pattern:  Matrix Weight (ct): 44.5 Dimensions (mm): 30x29x8 Brightness rating: Subdued Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID:  BO32 $50
  • BO73 IMG_7444shBO73 IMG_7445sh
    Out of Stock
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform Cut: Doublet Color: Blue/Green/Purple Pattern:  Broad Size (mm):  15x10.5x3 Weight (ct):  4 Brightness rating (1-5): 4 Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated GbG ID:  BO73 $175
  • BO-20 IMG_3492shBO-20 IMG_3488sh
    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 $50
  • BO30 IMG_3794shBO30 IMG_3792sh
    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 $50
  • BO-16 IMG_3018shBO-16 IMG_3020sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color: Blue Pattern:  Matrix Weight (ct):    55.2 Dimensions (mm): 45x25 Thickness (mm):  8 Brightness rating: Subdued Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID:  BO16 $50
  • BO-18 IMG_3033shBO-18 IMG_3030sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color: Blue Metallic Pattern:  Floral Weight (ct):    56.55 Dimensions (mm): 33.5x17 Thickness (mm):  12 Brightness rating: Subdued  Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID:  BO18 $50
  • BO37 IMG_3832shBO37 IMG_3831sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color:   Blue  Yellow  Pattern:  Matrix Weight (ct):    57.8 Dimensions (mm): 32x26 Thickness (mm):  7 Brightness rating: Subdued  Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Drilled for pendant GbG ID:  BO37 $50
  • BO31 IMG_3800shBO31 IMG_3799sh
    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 $50
  • BO50 IMG_3924shBO50 IMG_3924sh
    Origin: Queensland, Australia Opal Type: Solid Boulder Opal Shape: Freeform   Color: Green Blue   Yellow  Pattern:  Matrix Weight (ct):    75.8 Dimensions (mm): 56x32 Thickness (mm):  5 Brightness rating: Subdued   Transparency:   Opaque MOHS Hardness: 5.5 - 6.5 Treatment: Non-treated Setting: Undrilled for pendant GbG ID:  BO50 $350