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Australian Solid Natural Polished Semi Black Opal.
Photos viewing from both sides.
Opal Type : Solid Australian Dark Opal
Carat Weight : 1.45 ct
Size : 6.80 mm x 10.31 mm approx
Thickness : 3.82 mm
Color : Red Green Blue
Shape : Free Shape
Cut : Medium Double Dome Cabochon
Clarity : Translucent
Brightness B1 - B5 : B3.8
B1:Faint B2:Dull B3:Bright B4:Very Bright B5:Brilliant
Body Tone N1-N9 : N5 Dark Opal
N1-N4:Black Opal N5-N6:Dark Opal N7-N9:Light Opal
Treatment : NONE
Origin : Lightning Ridge Opal Field, NSW Australia