Turquoise

:This article is about the gem. For the colour, see turquoise (color) and cyan.

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Turquoise (or turquois) is opaque, blue-to-green hydrated copper aluminium phosphate mineral according to the chemical formula CuAl6(PO4)4(OH)8?5H2O. It is rare and valuable in finer grades and has been enjoyed as a gem and ornamental stone for thousands of years owing to its unique hue. In recent times turquoise—like most other opaque gems—has had its popularity undermined by the introduction of treatments, imitations, and synthetics onto the market, some difficult to detect even by experts.

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The word turquoise is very old and likely is derived from the French pierre turquoise, meaning Turkish stone. This is thought to have arisen from a misconception: turquoise does not occur in Turkey but was traded there, and the gem became associated with the country in the West.

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Turquoise (color): Turquoise is a mid-value color blend of blue and green. It's the color of a valuable and popular mineral often turned into jewelry. The term comes from a degeneration of "Turkish". Teal, blue-green, and aqua are similar colours....

Cyan: :This article is about the color. For other senses of this word see cyan (disambiguation)....

Hydrated: REDIRECT Hydrate...

Turquoise related Images and Photos (experimental)

Turquoise Sea	Turquoise Earrings	Turquoise de Helio 3	Retro Turquoise I
Retro Turquoise II	Set in Turquoise II	Marilyn Monroe Turquoise Dress Water Globe	Lady In Turquoise
Cake Jewelry Turquoise Colored Pendant	Wonder Woman Turquoise Women's Fitted T-Shirt	Orange on Turquoise	Inside with Turquoise Vase