Unclassified
Halley's Comet Opal
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Unclassified
Halley's Comet Opal
Record-setting black opal
uncommon · Q5642935
Related cards · solid geologic material
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Unclassified
Mineral
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Unclassified
Jet (gemstone)
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Unclassified
Opalite
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Unclassified
Mineraloid
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Unclassified
Olympic Australis
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Unclassified
Andamooka Opal
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