Natural Lightning Ridge Solid Polished Black Crystal Opal with Green Blue Color Fires. Dark Opals 06 mm approx

06 mm approx

7B1: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

Opal Type : Solid Australian Black OpalCarat Weight : 3

40 mm x 12

Natural Lightning Ridge Solid Polished Black Crystal Opal with Green Blue Color Fires. Dark Opals 06 mm approxAustralian Solid Natural Polished Black Crystal Opal. Opal Type : Solid Aussie Black Crystal Opal Carat Weight : 2. 18 ct Size : 7. 74 mm x 10. 33 mm approx Thickness : 4. 72 mm Color : Green Blue Shape : Oval Cut : Medium Dome Cabochon Clarity : Translucent Brightness B1 B5 : B3. 7 B1: Faint B2: Dull B3: Bright B4: Very Bright B5: Brilliant Body Tone N1 N9 : N4 Black Opal N1 N4: Black Opal N5 N6: Dark Opal N7 N9: Light Opal Treatment : NONE Origin :