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Australian boulder opal grades
What is the difference between Australian black opal and Australian boulder opal?
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Australian boulder opal grades
What is the difference between Australian black opal and Australian boulder opal?
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16.14 Ct top gem boulder opal
16.14 Ct top gem boulder opal
17.47 Ct rectangle boulder opal
17.47 Ct rectangle boulder opal
17.55 Ct gem boulder opal
17.55 Ct gem boulder opal
18.14 Ct green-blue and red boulder opal
18.14 Ct green-blue and red boulder opal
18.23 Ct ocean green-blue boulder opal
18.23 Ct ocean green-blue boulder opal
18.93 Ct top gem grade boulder opal
18.93 Ct top gem grade boulder opal
2.34 Ct extra small boulder opal
2.34 Ct extra small boulder opal
2.69 Ct small green-blue boulder opal
2.69 Ct small green-blue boulder opal
20.23 Ct pink, orange and green boulder opal
20.23 Ct pink, orange and green boulder opal
20.31 Ct oval boulder opal
20.31 Ct oval boulder opal
21.35 Ct rainbow stripes boulder opal
21.35 Ct rainbow stripes boulder opal
22.90 Ct rainbow matrix boulder opal
22.90 Ct rainbow matrix boulder opal
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