Turquoise #87 | Pinto Valley Turquoise unenhanced black crystal opal that

unenhanced black crystal opal that shows off shades of electric blue

76 carats

79 carats

The Weight: 20

62 carats

Turquoise #87 | Pinto Valley Turquoise unenhanced black crystal opal thatThe Stone: Turquoise natural stabilized The Weight: 42. 93carats The Origin: Pinto Valley Mine, Arizona The Cut: Freeform Cabochon Cut stone measurements: 33. 83mm x 26. 18mm x 8. 45mm 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 rarity. Certain mines