mineral

Amazonite

Potassium Feldspar (Microcline), K(AlSi3O8)

Hardness: 6–6.5 (Mohs scale); Color: green to bluish-green; Luster: vitreous; Crystal structure: triclinic; Cleavage: perfect in two directions; Specific gravity: 2.56–2.58

Hardness: 6–6
Color: green to bluish-green
Luster: vitreous

Identified April 22, 2026More mineral →

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Physical properties

Hardness: 6–6.5 (Mohs scale); Color: green to bluish-green; Luster: vitreous; Crystal structure: triclinic; Cleavage: perfect in two directions; Specific gravity: 2.56–2.58

Formation & geological history

Formed in plutonic rocks, primarily pegmatites and granites, through hydrothermal activity. Often found in pockets where lead impurities and water provide the signature teal color.

Uses & applications

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

Geological facts

It is often called the 'Amazon stone,' though it is not actually found in the Amazon River itself; it was named after the region. Its green color was long thought to be due to copper, but recent research suggests it is caused by trace amounts of lead and water.

Field identification & locations

Identify in the field by its distinct teal/aqua color and white streaks (perthitic texture). Common locations include Brazil, Russia, Ethiopia, and the Pikes Peak region of Colorado, USA.

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Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

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mineral