Solid Australian Lightning Ridge Black Opal Sterling Silver Ring

Opal Type : Solid Australian Black OpalCarat Weight : 1.34 ctSize : 7.54 mm x 8.50 mm approx.Color : Green BlueShape : PeachCut : Medium Dome Cabochon Clarity : TranslucentBrightness B1 - B5 : B3.5B1:Faint    B2:Dull    B3:Bright    B4:Very Bright    B5:BrilliantBody Tone N1-N9 : N4 Black OpalN1-N4:Black Opal    N5-N6:Dark Opal    N7-N9:Light Opal Treatment : No EnhancedOrigin : Lightning Ridge  Opal Field, NSW Australia. ---------------------------------------------------Total Item Weight : 4.95 gMetal Type : SilverMetal Purity : 92.5 Sterling Ring Size :US 7 (17.3 mm)Britain/Australia N1/2Asia 14Euro 54