Boulder opal 6.83ct 18 x 11mm Australian opal natural solid loose unset stone

DETAILS: No8663 Natural solid boulder opal loose stone 6.83ct
Stone Natural solid boulder opal
Carat 6.83ct
Dimensions 18.62mm x 11.62mm Thickness 3.72mm (at the longest point)
Shape Freeform
Colour Grey-blue
Transparency Opaque
Origin Winton, Queensland, Australia
Note: *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.