mineral

Amazonite

Amazonite (KAlSi3O8)

Hardness: 6-6.5; Color: Blue-green to turquoise-green; Luster: Vitreous; Crystal Structure: Triclinic; Cleavage: Perfect in two directions at nearly 90 degrees; Specific Gravity: 2.56-2.58

Hardness: 6-6
Color: Blue-green to turquoise-green
Luster: Vitreous

Identified April 7, 2026More mineral →

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Physical properties

Hardness: 6-6.5; Color: Blue-green to turquoise-green; Luster: Vitreous; Crystal Structure: Triclinic; Cleavage: Perfect in two directions at nearly 90 degrees; Specific Gravity: 2.56-2.58

Formation & geological history

Forms in granite pegmatites and hydrothermal veins. Its distinct color is attributed to the presence of lead and water within the feldspar structure during crystallized cooling.

Uses & applications

Used primarily as a gemstone for jewelry (cabochons and beads) and as an ornamental stone for carvings. It is also a very popular specimen for mineral collectors.

Geological facts

Amazonite is a green variety of microcline feldspar. Despite its name, it is not actually found in the Amazon River, but was named after the region due to its resemblance to other green stones found there.

Field identification & locations

Identify in the field by its distinct blue-green color and 'Schiller' effect (a silvery sheen or wavy pattern). Commonly found in Russia, Brazil, Ethiopia, and the Pikes Peak region of Colorado, USA.