mineral

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Hardness: 6-6.5 Mohs scale; Color: Green to bluish-green, often with white streaks; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions

Hardness: 6-6
Color: Green to bluish-green, often with white streaks
Luster: Vitreous to pearly

Identified May 9, 2026More mineral →

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Physical properties

Hardness: 6-6.5 Mohs scale; Color: Green to bluish-green, often with white streaks; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions

Formation & geological history

Found in intrusive igneous rocks, especially granites and pegmatites. Formed by slow cooling of magma enriched in potassium and lead, which gives it the green color.

Uses & applications

Primarily used as a gemstone in jewelry, ornamental carvings, and popular among crystal collectors for metaphysical and aesthetic purposes.

Geological facts

Named after the Amazon River, though it is not actually found there. The green color was long thought to be from copper, but modern studies show it is due to lead and water inclusions.

Field identification & locations

Identify by its distinctive sea-green to turquoise color and the presence of white wavelike streaks (perthitic texture). Common locations include Russia, Colorado (USA), Madagascar, and Brazil.