Australian Lightning Ridge Solid Opal Sterling Silver Ring

Opal Type : Australian Solid Light OpalCarat Weight : 2.74 ctSize : 7.44 mm x 18.92 mm approx.Color : Green BlueShape : PearCut : Low Dome CabochonClarity : TranslucentBrightness B1 - B5 : B3.6B1:Faint  B2:Dull  B3:Bright  B4:Very  Bright B5:BrilliantBody Tone N1-N9 : N7 Light OpalN1-N4:Black  Opal N5-N6:Dark  Opal N7-N9:Light OpalTreatment : NONEOrigin : Origin : Lightning Ridge Opal Field, NSW Australia. ---------------------------------------------------Total Item Weight : 5.20 gMetal Type : SilverMetal Purity : 92.5 Sterling Silver Ring Size :US-7 (17.3 mm)Britain/Australia N1/2Asia 14Euro 54