Black Opal Brightness Chart. | Black opal, Opal, Precious stones
Opal bodytone and brightness scale - Black Opal Direct
Opal Body Tone
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Australian Black Opal Gemstone 7cts Mulga™ Field N2 Body Tone B2 Brigh – Opal Fever Mate
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N1 BODY TONE MULTI FIRE BLACK OPAL .55CTS JO 1328
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Australian Black Opal Gemstone 7cts Mulga™ Field N2 Body Tone B2 Brigh – Opal Fever Mate
1.30 CT LIGHTNING RIDGE MILKY OPAL BODY TONE N6 JJ178
Australian Semi Black Opal Gemstone 1.2cts N6 Body Tone B1 Brightness – Opal Fever Mate
Australian Semi Black Opal Gemstone 1.9cts Gem Grade N5 Body Tone B2 B – Opal Fever Mate
Opals classification and value
25 ct black opal. Drastic body tone changes. Is this Broad Flash? : r/Opals
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Opal bodytone and brightness scale - Black Opal Direct
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Opals classification and value
Black Opal Brightness and Body Tone Guide | Opal Auctions
Australian Semi Black Opal Gemstone 3.4cts N7 Body Tone B3 Brightness – Opal Fever Mate
Australian Semi Black Opal Gemstone 2.2cts Coocoran Field N5 Body Tone – Opal Fever Mate
Semi Black Opal Gemstone 0.99cts N5 Body Tone B2 Brightness Amazing Ne – Opal Fever Mate
