Aqua vs. Turquoise

Aquanoun

(inorganic compound) The compound water.

Aquanoun

A shade of colour, usually a mix of blue and green similar to the colour turquoise.

Aquaadjective

Of a greenish-blue colour.

Aquanoun

Water; - a word much used in pharmacy and the old chemistry, in various signification, determined by the word or words annexed.

Aquanoun

a shade of blue tinged with green

Turquoisenoun

(countable) A sky-blue, greenish-blue, or greenish-gray semi-precious gemstone.

Turquoisenoun

A pale greenish-blue colour, like that of the gemstone.

Turquoiseadjective

Made of turquoise (the gemstone).

Turquoiseadjective

Having a pale greenish-blue colour.

Turquoisenoun

A hydrous phosphate of alumina containing a little copper; calaite. It has a blue, or bluish green, color, and usually occurs in reniform masses with a botryoidal surface.

Turquoiseadjective

Having a fine light blue color, like that of choice mineral turquoise.

Turquoisenoun

a blue to gray green mineral consisting of copper aluminum phosphate; blue turquoise is valued as a gemstone

Turquoisenoun

a shade of blue tinged with green

Turquoisenoun

a greenish-blue colour

Turquoisenoun

a semi-precious stone, typically opaque and of a greenish-blue or sky-blue colour, consisting of a hydrated phosphate of copper and aluminium.

Turquoise

Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gemstone and ornamental stone for thousands of years owing to its unique hue. Like most other opaque gems, turquoise has been devalued by the introduction onto the market of treatments, imitations and synthetics.