A small blue and ironstone boulder opal specimen. 85.4 carats / 17 grams 27 x 28.2 mm / 1.06" x 1.11". 15 mm / 0.59" thick. Natural solid boulder opal...
A small blue and ironstone boulder opal specimen. 82.48 carats / 16.5 grams 34.2 x 24 mm / 1.34" x 0.94". 15 mm / 0.59" thick. Natural solid boulder opal...
An extra-small green and blue boulder opal specimen. 69.63 carats / 13.9 grams 20.3 x 16.5 mm / 0.79" x 0.64". 19 mm / 0.74" thick. Natural solid boulder opal...
A lovely small pastel boulder opal specimen. 120 carats / 24 grams 39 x 32 mm / 1.53" x 1.25". 15.5 mm / 0.61" thick. Natural solid boulder opal specimen....
An extra-small green and blue boulder opal specimen. 68.72 carats / 13.7 grams 23.5 x 15.8 mm / 0.92" x 0.62". 19.8 mm / 0.77" thick. Natural solid boulder opal...
A gorgeous extra-small ocean green and blue boulder opal specimen. 57.58 carats / 11.5 grams 22 x 23.5 mm / 0.86" x 0.92". 23.5 mm / 0.92" thick. Natural solid...
