Mineral

Amazonite

Potassium Feldspar (KAlSi3O8)

AI-generated identification · may be incorrect

Hardness: 6-6.5 (Mohs), Color: Turquoise-green to blue-green with white streaking, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect, Specific gravity: 2.56-2.58

Hardness: 6-6

Identified March 17, 2026More mineral →

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Physical properties

Hardness: 6-6.5 (Mohs), Color: Turquoise-green to blue-green with white streaking, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect, Specific gravity: 2.56-2.58

Formation & geological history

Formed in plutonic rocks, primarily granitic pegmatites. The green color is derived from trace amounts of lead and water within the feldspar lattice during hydrothermal processes.

Uses & applications

Used primarily as a gemstone for jewelry (cabochons, beads), decorative carvings, and as a popular mineral specimen for collectors.

Geological facts

Historically named after the Amazon River, though no deposits are actually found there. It is the only gemstone variety of the mineral Microcline.

Field identification & locations

Identify by its distinct 'shiller' or mesh-like white streaks against a green-blue background. Commonly found in Brazil, Russia (Urals), Ethiopia, and the USA (Colorado).