Opal Type : Solid Australian Black Opal
Carat Weight : 2.20 ct
Size : 6.85 mm x 16.35 mm approx
Color : Green Blue
Shape : Marquise
Cut : Medium Dome cabochon
Clarity : Opaque
Brightness B1 - B5 : B3.5
B1:Faint B2:Dull B3:Bright B4:Very Bright B5:Brilliant
Body Tone N1-N9 : N3 Black Opal
N1-N4:Black Opal N5-N6:Dark Opal N7-N9:Light Opal
Treatment : NONE
Origin : Lightning Ridge Opal Field, NSW Australia