12.17ct Koroit Boulder Matrix Opal | #E191 Chrysoberyl " Green material is also

"  Green material is also relatively well-known to the industry

These sizable

stone measurements: 36mm x 23mm x 7mm

or add it in together with others to complete an ensemble

likely origin: Thailand

12.17ct Koroit Boulder Matrix Opal | #E191 Chrysoberyl " Green material is alsoKoroit Boulder Matrix Opal Weight (carats) 12. 17cts Origin Koroit Mining District, Queensland, Australia Shape Oval Dimensions (millimeters) 22. 41mm x 12. 80mm x 5. 16mm Dimensions (inches) 0. 9" x 0. 5" x 0. 2" Body Tone (+N1 to N9 ) NA Boulder Brightness ( 1 to 5+) B1. 5 Predominant Colors Blue Directionality of Fire Somewhat Directional Treatments Enhancements None Suggested Purpose Pendant Ring Sku Number #E191 Additional Notes None