Lightning Ridge Solid Natural Opal Sterling Silver Ring

Opal Type : Australian Solid Dark OpalCarat Weight : 1.20 ctSize : 5.10 mm x 12.17 mm approx.Color : Multi-ColorShape : PearCut : Low Dome CabochonClarity : OpaqueBrightness B1 - B5 : B3.6B1: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 : Lightning Ridge Opal Field, NSW Australia ---------------------------------------------------Total Item Weight : 3.45 gMetal Type : SilverMetal Purity : 92.5 Sterling Ring Size :US 6.75 (17.1 mm) Britain/Australia NAsia 13.5Euro 53