mineral

Amazonite

Potassium Aluminum Silicate (KAlSi3O8)

AI-generated identification · may be incorrect

Hardness: 6-6.5 on Mohs scale; Color: Turqouise-green to bright blue-green; Luster: Vitreous (glassy); Crystal Structure: Triclinic; Cleavage: Perfect in two directions.

Hardness: 6-6
Color: Turqouise-green to bright blue-green
Luster: Vitreous (glassy)

Identified March 27, 2026More mineral →

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Physical properties

Hardness: 6-6.5 on Mohs scale; Color: Turqouise-green to bright blue-green; Luster: Vitreous (glassy); Crystal Structure: Triclinic; Cleavage: Perfect in two directions.

Formation & geological history

Forms in pegmatites and granites through hydrothermal activity. Color is derived from trace amounts of lead and water within the feldspar structure. Found in Precambrian and Paleozoic geological deposits.

Uses & applications

Used primarily as a gemstone for jewelry, cabochons, and ornamental carvings. Also popular as a specimen for mineral collectors.

Geological facts

Named after the Amazon River, though it is not actually found there. It was historically called 'Amazon Stone.' It is a variety of Microcline feldspar.

Field identification & locations

Identify in the field by its distinct aqua-green color and typical feldspar 'shiller' or pearly sheen on cleavage planes. Commonly found in Colorado (USA), Russia, Brazil, and Madagascar.