mineral

Amazonite

K(AlSi3O8) - Lead-bearing Microcline

Hardness: 6-6.5; Color: light green to blue-green; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 2.56-2.58

Hardness: 6-6
Color: light green to blue-green
Luster: Vitreous to pearly

Identified July 21, 2026More mineral →

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Physical properties

Hardness: 6-6.5; Color: light green to blue-green; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 2.56-2.58

Formation & geological history

Forms in igneous rocks, specifically granitic pegmatites. The blue-green color results from the presence of small amounts of lead and water within the feldspar structure.

Uses & applications

Primarily used as a gemstone for jewelry, cabochons, and ornamental carvings. It is also a popular collector's mineral.

Geological facts

Named after the Amazon River, though it is not actually found there; it was likely confused with other green stones found in that region historically.

Field identification & locations

Identify by its distinct turquoise-green color and 'Schiller' effect (a silvery sheen). Commonly found in Russia, Brazil, Ethiopia, and the Pikes Peak region of Colorado, USA.