mineral

Amazonite

Microcline-type Feldspar (KAlSi3O8)

Hardness: 6-6.5 Mohs; Color: bright green to blue-green; Luster: vitreous to pearly; Crystal structure: triclinic; Cleavage: two perfect planes; Specific gravity: 2.56-2.58

Hardness: 6-6
Color: bright green to blue-green
Luster: vitreous to pearly

Identified June 28, 2026More mineral →

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Physical properties

Hardness: 6-6.5 Mohs; Color: bright green to blue-green; Luster: vitreous to pearly; Crystal structure: triclinic; Cleavage: two perfect planes; Specific gravity: 2.56-2.58

Formation & geological history

Formed in plutonic rocks, primarily granitic pegmatites. The green color is caused by trace amounts of lead and water within the feldspar structure during crystallization.

Uses & applications

Primarily used as a gemstone for jewelry, lapidary art (cabochons and carvings), and as a populr mineral specimen for collectors.

Geological facts

Also known as Amazonstone, it was named after the Amazon River, although it is not actually found there. It is the official state gemstone of Virginia.

Field identification & locations

Identify by its unique 'schiller' or grid-like white streaks (aventurescence) and its distinct minty green color. Commonly found in Russia, Brazil, Ethiopia, and Colorado (USA).