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noun. uk / ˈtɜː.kwɔɪz / us / ˈtɝː.kɔɪz / turquoise noun (STONE) Add to word list. [ C or U ] a bluish-green semi-precious stone that is often used in jewellery. Igor Sokalski/iStock/Getty Images Plus/GettyImages. SMART Vocabulary: related words and phrases. Geology: precious & semi-precious stones. amber. blood diamond. carbuncle. carnelian.
1. : a mineral that is a blue, bluish-green, or greenish-gray hydrous basic phosphate of copper and aluminum, takes a high polish, and is valued as a gem when sky blue. 2. : a light greenish blue. Examples of turquoise in a Sentence.
Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6( PO 4)4( OH)8·4 H 2 O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.
Turquoise definition: an opaque mineral, a basic hydrous copper aluminum phosphate often containing a small amount of iron, sky-blue or greenish-blue in color, cut cabochon as a gem.. See examples of TURQUOISE used in a sentence.
TURQUOISE meaning: 1. a bluish-green semi-precious stone that is often used in jewellery 2. a bluish-green colour 3…. Learn more.
1. A blue to blue-green mineral of aluminum and copper, mainly CuAl 6 (PO 4) 4 (OH) 8· 4H 2 O, prized as a gemstone in its polished blue form. 2. A light to brilliant bluish green.
The color known as turquoise comes from the semi-precious gem of the same name. Chemically, turquoise is a mineral made of copper aluminum phosphate, but you're most likely to be familiar with its polished form, especially in rings and necklaces and belt buckles.
