Boulder opal 7.71ct 19.7 x 12mm Australian opal natural solid unset stone

DETAILS: No8716 Natural solid boulder opal loose stone
Stone Natural solid boulder opal
Carat 7.71ct
Dimensions 19.74mm x 12.15mm Thickness 4.35mm (at the longest point)
Shape Freeform
Colour Violet, blue
Transparency Opaque
Origin Winton, Queensland, Australia
Note: *It has a slight undulating surface but smooth polish.
Last picture is back of the stone.
All photos were taken under natural light, sunlight and LED lights.

*Please check the measurements before purchase, the items appear bigger in photos.