mineral

Amazonite

Potassium aluminum silicate (KAlSi3O8)

Hardness: 6-6.5 (Mohs scale), Color: Green to bluish-green (often with white streaks), Luster: Vitreous to pearly, Crystal Structure: Triclinic, Cleavage: Perfect at two directions, Specific Gravity: 2.56-2.58

Hardness: 6-6

Identified March 22, 2026More mineral →

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Physical properties

Formation & geological history

Formed in deep-seated igneous rocks, primarily pegmatites. The green color is attributed to small amounts of lead and water within the feldspar structure. Found in Precambrian to more recent geological formations.

Uses & applications

Used primarily as a gemstone for jewelry, ornamental carvings, and high-quality mineral specimens for collectors.

Geological facts

Also known as 'Amazon Stone', though it is not found in the Amazon River. It was historically named for the green stones found in that region, which were more likely nephrite jade or similar minerals.

Field identification & locations

Identify in the field by its distinct teal-green color and 'perthitic' texture (fine white streaks). Commonly found in Russia (Urals), USA (Colorado and Virginia), Madagascar, and Brazil.