Solid Lightning Ridge Natural Black Opal Silver Pendant Necklace Crystal Opals 5B1:Faint B2:Dull B3:Bright B4:Very Bright

5B1:Faint    B2:Dull    B3:Bright     B4:Very Bright     B5:BrilliantBody Tone N1-N9 : N5 Dark OpalN1-N4:Black Opal     N5-N6:Dark Opal     N7-N9:Light Opal

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31 mm x 10

5B1:Faint    B2 :Dull    B3:Bright    B4:Very Bright    B5:BrilliantBody Tone N1-N9 : N6 Dark OpalN1-N4:Black Opal    N5-N6:Dark Opal    N7-N9:Light OpalTreatment : NONEOrigin : Mintabie Opal Field

5B1:Faint     B2:Dull     B3:Bright     B4:Very Bright     B5:BrilliantBody Tone N1-N9 : N3 Black OpalN1-N4:Black Opal     N5-N6:Dark Opal     N7-N9:Light OpalTreatment : NONEOrigin : Lightning Ridge Opal Field

Solid Lightning Ridge Natural Black Opal Silver Pendant Necklace Crystal Opals 5B1:Faint B2:Dull B3:Bright B4:Very BrightAustralian Solid Natural Black Opal Sterling Silver Pendant 18" chain Opal Type : Solid Australian Black OpalCarat Weight : 2. 02 ctSize : 9. 00 mm x 11. 35 mm approx. Color : Blue with a touch of GreenShape : Free Shape Cut : FacetClarity : TranslucentBrightness B1 B5 : B3. 5B1: Faint B2: Dull B3: Bright B4: Very Bright B5: BrilliantBody Tone N1 N9 : N3 Black OpalN1 N4: Black Opal N5 N6: Dark Opal N7 N9: Light Opal Treatment : NONEOrigin : Lightning