Opal Type : Solid Australian Black Opal
Carat Weight : 1.81ct
Size : 8.22 mm x 10.70mm approx
Thickness : 3.08 mm
Color : Green Blue
Shape : Free Shape
Cut : Low Dome cabochon
Clarity : Opaque
Brightness B1 - B5 : B3.5
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 : Lightning Ridge Opal Field, NSW Australia