mineral

Amazonite

Microcline feldspar (KAlSi3O8)

Hardness: 6 on the Mohs scale. Color: Bright turquoise-green to blue-green with characteristic white striations or mottled patterns. Luster: Vitreous to pearly. Crystal structure: Triclinic. Cleavage: Perfect in two directions at nearly right angles. Specific gravity: 2.56-2.58.

Hardness: 6 on the Mohs scale
Luster: Vitreous to pearly

Identified August 1, 2026More mineral →

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Physical properties

Formation & geological history

Forms in granitic pegmatites and hydrothermal veins, typically crystallizing slowly from cooling magma rich in water and rare elements like lead, which helps impart the distinctive color.

Uses & applications

Popularly used as a gemstone in cabochons, beads, inlay, and ornamental carvings, as well as valued by mineral collectors.

Geological facts

Despite its name, no amazonite deposits have ever been found in the Amazon River basin; the green stones found there historically were likely nephrite jade or other green minerals traded from elsewhere.

Field identification & locations

Easily identified by its distinct vibrant green-to-blue-green color combined with intersecting white lines or plaid-like striations (tartan twinning typical of microcline). Found worldwide including in the USA, Russia, Brazil, and Madagascar.