133.20CT Natural Turquoise Stretchable Bracelet

Weight:(133.20)CT

Stone:(Turquoise)

Turquoise is an opaque, blue-to-green mineralthat is a hydrous phosphate of copper and aluminium, with the chemical formulaCuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gemstonefor millennia due to its hue.

Like most other opaque gems, turquoise has been devalued by the introduction of treatments, imitations, and synthetics into the market. The robin egg blue or sky blue color of the Persianturquoise mined near the modern city of Nishapur, Iran, has been used as a guiding reference for evaluating turquoise quality.