Turquoise

A blue, bluish-green, or yellowish-green triclinic mineral that is a hydrous basic phosphate of copper and aluminum; it takes a high polish.

Works of Art

A blue, bluish-green, or yellowish-green triclinic mineral that is a hydrous basic phosphate of copper and aluminum; it takes a high polish.

Works of Art

c. 1942–46

1131–43

c. 15th–16th century

c. 1st–2nd century C.E.

c. 1887–1878 B.C.E.

c. 15th–early 16th century

c. 1400–1521

3rd–7th century C.E.

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