Natural Solid Polished Opal from Lightning Ridge with Green Blue Colors. Crystal Opals 4B1:Faint B2 :Dull B3:Bright B4:Very

4B1: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 : Lightning Ridge Opal Field

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87 mm approx

88 gMetal Type : Silver Metal Purity : 92

Britain/Australia K1/2

Natural Solid Polished Opal from Lightning Ridge with Green Blue Colors. Crystal Opals 4B1:Faint B2 :Dull B3:Bright B4:VeryAustralian Solid Natural Polished Opal. Opal Type : Solid Australian Dark Opal Carat Weight : 1. 37 ct Size : 6. 28 mm x 8. 83 mm approx Thickness : 4. 05 mm Color : Green Blue Shape : Oval Cut : Medium Double Dome Cabochon Clarity : Translucent Brightness B1 B5 : B3. 5 B1: Faint B2: Dull B3: Bright B4: Very Bright B5 : Brilliant Body Tone N1 N9 : N6 Dark Opal N1 N4: Black Opal N5 N6: Dark Opal N7 N9: Light Opal Treatment : NONE Origin : Lightning