Turquoise #266A | Pinto Valley Birthstone - Loose All zoisite ranks from 6

All zoisite ranks from 6 to 7 on the Mohs hardness scale

ultra-white matrix

A Solid Black Crystal Opal Ring in Yellow Gold

5 inches x 2

The Cut: Round Cabochon Cut

Turquoise #266A | Pinto Valley Birthstone - Loose All zoisite ranks from 6The Stone: Turquoise natural stabilized The Weight: 10. 57 carats The Origin: Pinto Valley Mine, Arizona The Cut: Oval Cabochon Cut stone measurements: 16mm x 11m x 6mm The Color: Blue with Black matrix About Turquoise: What once was regarded a common byproduct of copper mining is now realized to be a rather scarce gem. Typically found in or near copper mines around the world, turquoise from each locality differs in color, quality, character, and