*6.59Ct Boulder Opal - Australian Opal , 101EEst. $250-$500
9.54Ct Blue Boulder Opal - Australian Opal , 104EEst. $90-$180
18.59Ct Boulder Opal - Australian Opal, 124BEst. $110-$220
22.16Ct Blue Boulder Opal - Australian Opal , 450EEst. $90-$180
11.33Ct Blue Boulder Opal - Australian Opal , 861EEst. $90-$180
Vintage Platinum 1.43ct GIA Oval Boulder Opal Ring with Diamond AccentsEst. $3,570-$4,641
16.66Ct Blue Boulder Opal - Australian Opal , 515EEst. $90-$180
12.16Ct Blue Boulder Opal - Australian Opal , 932EEst. $90-$180
Chinese jade boulder carvingEst. $160-$300
*5.04Ct Boulder Opal Set - Australian Opal , 993EEst. $50-$100
8.51Ct Boulder Opal - Australian Opal, 734BEst. $90-$180
Chinese jade boulder carving of a rooster on the hillEst. $180-$300
*4.00Ct Boulder Opal Set - Australian Opal , 863EEst. $70-$140
5.84 Carats Turquoise Blue Boulder Opal - Natural Australian Stone, 49XMEst. $80-$160
11.02Ct Boulder Opal - Australian Opal , 876EEst. $110-$220
Chinese jade boulder carved of a ladybug on leaf statueEst. $250-$600
*6.61Ct Boulder Opal - Australian Opal, 250BEst. $110-$220
8Ct Winton Boulder Rough Opal - Australian Opal - Freeform Rough, 934BEst. $110-$220
An Australian Koroit Yowah Boulder Opal Rough Lot, 46.85g, 48ZHEst. $60-$120
5.07 Carats Iridescent Multicolor Boulder Opal - Natural Australian Stone, 56XMEst. $80-$160
*10.22Ct Boulder Opal Set - Australian Opal , 1214EEst. $70-$140
18.56Ct Boulder Opal - Australian Opal, 129BEst. $150-$300
16.04Ct Boulder Opal - Australian Opal, 738BEst. $130-$260
*7.47Ct Boulder Opal - Australian Opal , 75EEst. $150-$300
