A gorgeous diamond shaped boulder opal with strong greens, blues and purples. 11.34 carats. 16.3 x 15.3 mm / 0.64 x 0.60". 4.5 mm / 0.17" thick. Natural solid boulder...
A gorgeous diamond shaped boulder opal with an amazing straw patterned stripe running across the opal. 6.20 carats. 18 x 12.9 mm / 0.70 x 0.50". 4.3 mm / 0.17"...
A beautiful round pink and green striped boulder opal. 12.56 carats. ~ 18 x 18 mm / 0.70 x 0.70". 4 mm / 0.15" thick. Natural solid boulder opal. Mined...
A large teardrop pink and green wavy boulder opal. 25.86 carats. 30.2 x 18.7 mm / 1.18 x 0.73". 5 mm / 0.19" thick. Natural solid boulder opal. Mined by...
A gorgeous fan-shaped pink and green striped boulder opal. 9.01 carats. 17.6 x 16.6 mm / 0.69 x 0.65". 4.7 mm / 0.18" thick. Natural solid boulder opal. Mined by...
A half-moon shape boulder opal with lovely green-blues. This opal does have a curvy face. 7.62 carats. 20.3 x 11.1 mm / 0.80 x 0.43". 4 mm / 0.15" thick....
A large teardrop boulder opal, with a caramel stripe that contrasts with pretty pastel opal. 17.33 carats. 35.4 x 14 mm / 1.39" x 0.55". 4.7 mm / 0.18" thick....
