22.45 carat Natural Solid Boulder OPAL australia
Stone Type : Opal
Shape : Free Form Cabochon
Color : Iridescent
Clarity : Opaque
Number of gem : 1
Weight : 22.40 carat
Size : 18.22 x 28.02 x 5.07 mm.
Luster : 6 (Grading from 1- 6)
Treatment : none
Origin : Australia
Hardness : 5-6.5 Optic
Character : 1.38-1.47
Refractive Index : SiO2•nH20 Specific Gravity : SR Chemical Composition :