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Rios-Opale - Lightning-Ridge-Black Opal
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25 ct black opal. Drastic body tone changes. Is this Broad Flash? : r/Opals
Black Opals | Lightning Ridge | Description & Info | Australia
Opal Brightness and Body Tone Guide - Opal Galaxy
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Black Opal Brightness and Body Tone Guide | Blue opal jewelry, Opal, Unique opal
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Opal Body Tone
Australian Semi Black Opal Gemstone 1.2cts N6 Body Tone B1 Brightness – Opal Fever Mate
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Opal Bodytone and Opal brightness scale explained - YouTube
Australian Semi Black Opal Gemstone 1.2cts N6 Body Tone B1 Brightness – Opal Fever Mate
Opal Brightness and Body Tone Guide - Opal Galaxy
