WHAT IS PIPE CRYSTAL BOULDER OPAL?

Pipe Crystal Boulder Opal is a type of boulder opal that has only been found exclusively in Queensland, Australia to date. It is formed in round tubular holes in boulder sandstone rocks. Usually, the darker the sandstone, the darker the colours are in the opal.Read More


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214.9 Carat Large Double Sided Wood Fossil Boulder Opal Specimen

$3,500 $2,800

141.20 Carat Large Wood Fossil Boulder Opal Specimen

$1,750 $1,400

123.7 Carats Rare Wood Fossil Boulder Opal

$1,200 $960

120.55 Carats Rare Wood Fossil Boulder Opal

$1,200 $960

113.85 Carats Wood Fossil Boulder Opal

$825 $660

52.7 Carats Beautiful Bright Blue Polished Yowah Nut

$800 $640

58.05 Carats Rare Wood Fossil Boulder Opal

$725 $580

71.65 carat Double Sided Large Boulder Opal

$685 $548

Gorgeous Triangular Wood Replacement Boulder Opal Stone

$325 $260

15.75 Carats Electric Rolling Flash Pipe Boulder Opal

$320 $256

72.6 Carats Beautiful Koroit Boulder Opal

$275 $220

43.4 Carat Double Sided Wood Fossil / Replacement Boulder Opal

$265 $212

50.3 Carat Wood Fossil / Replacement Boulder Opal

$265 $212

50.75 Carat Wood Fossil / Replacement Boulder Opal

$255 $204

39.15 Carat Wood Fossil Boulder Opal

$250 $200

Wood Boulder Opal Stone

$235 $188

55.5 Carat Wood Fossil / Replacement Boulder Opal

$220 $176

46.1 Carat Wood Fossil / Replacement Boulder Opal

$215 $172

7.5 Carats Koroit Boulder Opal

$175 $140

96.4 Carats Wood Fossil Replacement Boulder Opal

$155 $124

59.9 Carats Wood Fossil Replacement Boulder Opal

$135 $108

9.55 Carat Beautiful Green Shimmer Wood replacement Boulder Opal

$125 $100

29.6 Carats Yowah Boulder Opal

$120 $96