4.54 ct Crystal Opal Lightning Ridge natural solid Australian gem COSA170721
4.80 ct Crystal Opal Lightning Ridge natural solid Australian gem COSA041021
5.73 ct Black Opal Stone natural solid Australian gem BOPB160721
5.97 ct Black Opal Ring Stone natural solid Australian gem BOPB301121
7.10 ct Black Opal Ring Stone natural solid Australian gem BOPA150721
7.25 ct Crystal Opal Lightning Ridge natural solid Australian gem COSA300621
7.32 ct Black Opal Ring Stone natural solid Australian gem BOPA300621
Australian Natural Solid Semi-Black Opal 1.95ct Rare Gem from Lightning Ridge
Australian Natural Solid Semi-Black Opal Stone 1.77ct Gem SBOPB110115
Beautiful Solid Natural Australian Black Opal Sterling Silver Ring Size 6 BOPR002
BIG 15.78 ct Semi-Black Opal Ring Stone natural solid Australian gem SBOPQ301121
Black Crystal Opal Lightning Ridge natural solid 1.07ct Australian gem BOSC290817
Black Opal 14k solid White Gold Pendant with diamonds BP0A281119AA
Black Opal 18k solid White Gold Pendant BOPU189281119
Black Opal 18k solid Yellow Gold Pendant BOPA68281119
Black Opal Lightning Ridge natural solid 0.87ct Australian gem BOSE290817
Black Opal Lightning Ridge natural solid 1.27ct Australian gem BOSA290817
Black Opal Lightning Ridge natural solid 1.56ct Australian gem BOSB290817
Black Opal Lightning Ridge natural solid 14.03ct Australian gem BOSA030917
Black Opal Lightning Ridge natural solid 2.20ct Australian gem BOSD290817