Lightning Ridge Solid Black Opal Sterling Silver Ring Size:Size US 6.5 6B1:Faint B2:Dull B3:Bright B4:Very Bright

6B1:Faint  B2:Dull  B3:Bright  B4:Very  Bright B5:BrilliantBody Tone N1-N9 : N8 Light OpalN1-N4:Black  Opal N5-N6:Dark  Opal N7-N9:Light OpalTreatment : NONEOrigin : Origin : Coober Pedy Opal Field

7B1:Faint     B2:Dull     B3:Bright     B4:Very Bright     B5:BrilliantBody Tone N1-N9 : N2 Black OpalN1-N4:Black Opal     N5-N6:Dark Opal     N7-N9:Light OpalTreatment : NONEOrigin : Lightning Ridge Opal Field

Australian Solid Natural Polished Semi Black Opal

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Lightning Ridge Solid Black Opal Sterling Silver Ring Size:Size US 6.5 6B1:Faint B2:Dull B3:Bright B4:Very BrightOpal Type : Australian Solid Black OpalCarat Weight : 1. 10 ctSize : 7. 00 mm x 7. 00 mm approx. Color : BlueShape : SquareCut : FacetClarity : OpaqueBrightness B1 B5 : B3. 5B1: Faint B2: Dull B3: Bright B4: Very Bright B5: BrilliantBody Tone N1 N9 : N2 Black OpalN1 N4: Black Opal N5 N6: Dark Opal N7 N9: Light OpalTreatment : NONEOrigin : Origin : Lightning Ridge Opal Field, NSW Australia. Total Item Weight : 4. 80 gMetal Type : SilverMetal Purity :