mineral

Amazonite

Tectosilicate (variety of Microcline), K(AlSi3O8)

Hardness: 6-6.5; Color: Blue-green, turquoise, light green; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 2.56-2.58

Hardness: 6-6
Color: Blue-green, turquoise, light green
Luster: Vitreous to pearly

Identified May 16, 2026More mineral →

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Physical properties

Hardness: 6-6.5; Color: Blue-green, turquoise, light green; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 2.56-2.58

Formation & geological history

Formed through the slow cooling of magma in granitic pegmatites. The distinct blue-green color is caused by trace amounts of lead and water within the feldspar crystal lattice.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons, beads) and ornamental carvings; also valued as a mineral specimen for collectors.

Geological facts

Named after the Amazon River, though it is not actually found there. It is sometimes called the 'Stone of Hope' or 'Amazon Stone'. One of the most famous localities is Pike's Peak, Colorado, where it occurs with smoky quartz.

Field identification & locations

Identify by its unique 'schiller' or cross-hatch pattern known as perthitic texture under light. Often found in granite deposits in the USA (Colorado, Virginia), Russia, Brazil, and Madagascar.

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