3.72Ct Boulder Opal - Australian Opal , 41EEst. $110-$220
8.51Ct Boulder Opal - Australian Opal, 734BEst. $90-$180
11.33Ct Blue Boulder Opal - Australian Opal , 861EEst. $90-$180
16.66Ct Blue Boulder Opal - Australian Opal , 515EEst. $90-$180
Chinese jade boulder carved of a ladybug on leaf statueEst. $250-$600
*4.00Ct Boulder Opal Set - Australian Opal , 863EEst. $70-$140
8Ct Winton Boulder Rough Opal - Australian Opal - Freeform Rough, 934BEst. $110-$220
Chinese jade boulder carving of a rooster on the hillEst. $180-$300
*7.47Ct Boulder Opal - Australian Opal , 75EEst. $150-$300
11.02Ct Boulder Opal - Australian Opal , 876EEst. $110-$220
16.04Ct Boulder Opal - Australian Opal, 738BEst. $130-$260
12.96Ct Boulder Opal - Australian Opal, 710BEst. $170-$340
7.83Ct Boulder Opal - Australian Opal , 525EEst. $110-$220
10.08Ct Boulder Opal - Australian Opal , 539EEst. $110-$220
*5.90Ct Boulder Opal - Australian Opal , 460EEst. $110-$220
7.57Ct Boulder Opal - Australian Opal , 516EEst. $110-$220
*6.68Ct Yowah Boulder Opal - Australian Opal , 486EEst. $110-$220
*7.43Ct Boulder Opal - Australian Opal , 21EEst. $110-$220
10.16Ct Boulder Opal - Australian Opal, 737BEst. $90-$180
1.74Ct Boulder Opal - Australian Opal , 373EEst. $90-$180
12.74Ct Boulder Opal - Australian Opal , 913EEst. $110-$220
40Ct Winton Boulder Rough Opal - Australian Opal - Freeform Rough, 1087BEst. $130-$260
Natural Multi Color Flashing Boulder Opal 19.77 Ct. Free Form Cabochon Shape 32 x 17 Mm GemstoneEst. $227-$357
11.85Ct Boulder Opal - Australian Opal , 27EEst. $90-$180
