Solid Polished Black Opal from Australia.
Opal Type : Solid Australian Black Opal
Carat Weight : 1.74 ct
Size : 6.28 mm x 10.41 mm approx
Thickness : 4.53 mm
Color : Blue Green
Shape : Free Shape
Cut : Medium Dome Cabochon
Clarity : Translucent
Brightness B1 - B5 : B4
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.