A small, free-form boulder opal with some fun pink colours. 10.44 carats. 25.4 x 11.5 mm / 1.00 x 0.45". 4.1 mm / 0.16" thick. Natural solid boulder opal. Mined...
A long slender oval boulder opal with some lovely pastel colours. 3.96 carats. 23 x 6.3 mm / 0.90" x 0.24". 3 mm / 0.11" thick. Natural solid boulder opal....
A beautiful marquise-shaped boulder opal with green-blue stripes on a dark body tone / background. 25.43 carats. 48.7 x 12 mm / 1.91" x 0.47". 4.7 mm / 0.18" thick....
A rectangle boulder opal with pinks and caramel swirls. 10.70 carats. 20.9 x 11.6 mm / 0.82 x 0.45". 4.3 mm / 0.16" thick. Natural solid boulder opal. Mined by...
A small rectangle boulder opal with some colourful opal patches. 7.21 carats. 14.7 x 11.8 mm / 0.57 x 0.46". 3.7 mm / 0.14" thick. Natural solid boulder opal. Mined...
A rectangle boulder opal with a some lovely green-blues. 8.74 carats. 21.2 x 8.5 mm / 0.83 x 0.33". 3.8 mm / 0.14" thick. Natural solid boulder opal. Mined by...
A fun rectangle boulder opal with flashy patches of rainbow colours. 6.35 carats. 21.2 x 8.3 mm / 0.83 x 0.32". 3.1 mm / 0.12" thick. Natural solid boulder opal....
A small triangle boulder opal with flashy colours and fun caramels stripes. 4.64 carats. 24 x 7.1 mm / 0.94 x 0.27". 3.9 mm / 0.15" thick. Natural solid boulder...
