22.40 carat Solid Boulder OPAL

22.40 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 :