This is a natural solid turquoise cabochon. It has a deep teal color with no hint of green. I have tested it for dyes and resins and none are evident, suggesting this is a 100% natural stone. Exact origin is unknown, but is likely the American Southwest, possibly the Sleeping Beauty mine.Weight: 10.75 caratsSize: 17.5mm x 13.05mm x 6.0mm (Calibrated size, suitable for 13x18 mountings)Fully polished, front and back.You'll receive the exact stone pictured, which is ready to ship!Cheers,Austin