A marquise-shaped boulder opal with thin rainbow stripes and a thick caramel stripe. 10.82 carats. 26.5 x 10.3 mm / 1.04 x 0.40". 5.2 mm / 0.20" thick. Natural solid...
A small teardrop boulder opal with strong greens and orange colours. 2.47 carats. 17.5 x 6.8 mm / 0.68 x 0.26". 3.1 mm / 0.23" thick. Natural solid boulder opal....
A green-blue oval boulder opal. 14.95 carats. 26.5 x 14.8 mm / 1.04 x 0.58". 4.1 mm / 0.16" thick. Natural solid boulder opal. Mined by Sue at her Yaraka...
An oval boulder opal with green and purples and a semi-dark body tone / background. 16.03 carats. 27.6 x 12.5 mm / 1.08 x 0.49". 4.8 mm / 0.18" thick....
A rectangle boulder opal with green-blues and purples. 17.86 carats. 24.8 x 14.7 mm / 0.97 x 0.57". 4.6 mm / 0.18" thick. Natural solid boulder opal. Mined by Sue...
A fun green-blue boulder opal with an organic shape. 5.74 carats. 19.5 x 9.4 mm / 0.76 x 0.37". 4.3 mm / 0.16" thick. Natural solid boulder opal. Mined by...
A small slender rectangle boulder opal with some lovely orange and green colours. 2.84 carats. 19.4 x 5.4 mm / 0.76" x 0.21". 2.6 mm / 0.10" thick. Natural solid...
A small rectangle boulder opal with some fun purple colours. 3.81 carats. 16.8 x 6.7 mm / 0.66" x 0.26". 3.5 mm / 0.13" thick. Natural solid boulder opal. Mined...
