11.40ct Coober Pedy Australian White Opal | #E266 Goldstone 67mm Origin Quilpie Mining District

67mm Origin Quilpie Mining District

Green with Yellow

Vanity guess would be 1960's

A different variety of olivine similar to peridot

ring width (top): 21

11.40ct Coober Pedy Australian White Opal | #E266 Goldstone 67mm Origin Quilpie Mining DistrictOval Cabochon Coober Pedy Opal Weight (carats) 11. 40 carats Origin Coober Pedy, Australia Shape Oval Cabochon Dimensions (millimeters) 18. 63mm x 14. 40mm x 7. 42mm thick Dimensions (inches) 0. 74" x 0. 55" x 0. 49" thick Body Tone (+N1 to N9 ) N9 Brightness ( 1 to 5+) B5 Predominant Colors Dominant blue, green, orange with yellow, purple and red undertones Directionality of Fire Somewhat Directional Treatments Enhancements None Suggested Purpose