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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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Full spectrum opals
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5.04 Ct top gem boulder opal
5.04 Ct top gem boulder opal
44.58 Ct large gem boulder opal
44.58 Ct large gem boulder opal
4.86 Ct small gem boulder opal
4.86 Ct small gem boulder opal
4.48 Ct small oval boulder opal
4.48 Ct small oval boulder opal
4.17 Ct small pink and green boulder opal
4.17 Ct small pink and green boulder opal
34.48 Ct large free-form boulder opal
34.48 Ct large free-form boulder opal
32.96 Ct large teardrop boulder opal
32.96 Ct large teardrop boulder opal
31.50 Ct top gem grade boulder opal
31.50 Ct top gem grade boulder opal
3.76 Ct top gem grade boulder opal
3.76 Ct top gem grade boulder opal
3.32 Ct triangle boulder opal
3.32 Ct triangle boulder opal
22.90 Ct rainbow matrix boulder opal
22.90 Ct rainbow matrix boulder opal
21.35 Ct rainbow stripes boulder opal
21.35 Ct rainbow stripes boulder opal
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