Australian Solid Natural Crystal Opal.
Opal Type : Solid Australian Light Crystal Opal
Carat Weight : 1.67 ct
Size : 7.69 mm x 12.93 mm approx
Thickness : 2.90 mm
Color : Green Blue Orange Yellow
Shape : Free Shape
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 : N7 Light Opal
N1-N4:Black Opal N5-N6:Dark Opal N7-N9:Light Opal
Treatment : NONE
Origin : Lightning Ridge Opal Field, NSW Australia.