Boulder opal 18.32ct 21 x 15mm Australian opal natural solid unset stone Winton

DETAILS: No8463BX Natural solid boulder opal loose stone
Stone Natural solid boulder opal
Carat 18.32ct
Dimensions 21.19mm x 15.75mm Thickness 7.12mm (at the longest point)
Shape Freeform
Colour Light grey, blue
Transparency Opaque
Origin Winton, Queensland, Australia
Note: *The surface have slight convex.
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.