172.75ct Quilpie Boulder Opal Stone | #8

Australian Boulder Opal:, Weight (carats), 172.75cts, Dimensions (millimeters), 51.92mm x 35.71mm x 12.97mm, Origin, Quilpie Mining District,

151.32ct Loose Purple Boulder Opal Stone

Polished 11.95ct Boulder Opal Wedge Burton's – Burton's Gems and Opals

Australian Boulder Opal:, Weight (carats), 13.42cts, Dimensions (millimeters), 19.42mm x 15.22mm x 16.18mm, Origin, Quilpie Mining District,

13.42ct Quilpie Boulder Opal Stone | #5

151.32ct Loose Purple Boulder Opal Stone

62.42ct Loose Australian Boulder Opal Stone

55.41ct Triangular Cut Boulder Opal Stone

Purple Quilpie Boulder Opal Boomerang Stone

26.25ct Quilpie Boulder Opal Teardrop Shaped Stone

1,915ct Polished Quilpie Boulder Opal Specimen

Australian Boulder Opal:, Weight (carats), 73.58cts, Dimensions (millimeters), 40.29mm x 25.35mm x 10.10mm, Origin, Quilpie Mining District,

73.58ct Quilpie Boulder Opal Stone | #36

Striped Australian Boulder Opal Stone

Australian Boulder Opal:, Weight (carats), 20.36cts, Dimensions (millimeters), 27.67mm x 14.99mm x 5.46mm, Origin, Quilpie Mining District,

20.36ct Quilpie Boulder Opal Stone | #40

Rough Quilpie Boulder Opal Specimen