Boulder opal 6.79ct 15.5 x 12mm Australian opal natural solid loose unset stone

DETAILS: No9155 Natural solid boulder opal loose stone 6.79ct
Stone Natural solid boulder opal
Carat 6.79ct
Dimensions 15.51mm x 12.50mm Thickness 4.22mm (at the longest point)
Shape Oval
Colour Purple, brown
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.