mineral

Amazonite

K(AlSi3O8) - Potassium Aluminum Silicate (Triclinic)

AI-generated identification · may be incorrect

Hardness: 6-6.5 (Mohs scale), Color: Blue-green, turquoise, or green (often with white streaks), Luster: Vitreous to pearly, Crystal Structure: Triclinic, Cleavage: Perfect in two directions

Hardness: 6-6

Identified July 19, 2026More mineral →

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Physical properties

Hardness: 6-6.5 (Mohs scale), Color: Blue-green, turquoise, or green (often with white streaks), Luster: Vitreous to pearly, Crystal Structure: Triclinic, Cleavage: Perfect in two directions

Formation & geological history

Formed in plutonic rocks, primarily pegmatites and granites, through hydrothermal action. It gains its distinctive color from lead impurities and water content within the feldspar lattice.

Uses & applications

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

Geological facts

Amazonite is a variety of Microcline feldspar. Despite its name, it is not found in the Amazon River itself, but was named for the region where similar green stones were found previously. It is also known as 'Amazon Stone'.

Field identification & locations

Identify by its unique 'schiller' or cross-hatched pattern (tartan twinning) and its bright turquoise color. Common locations include Madagascar, Russia, Brazil, and Pikes Peak, Colorado.