mineral

Amazonite

Microcline (K(AlSi3O8))

Hardness: 6-6.5 on Mohs scale; Color: Pale green to turquoise blue; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 2.56-2.58

Hardness: 6-6
Color: Pale green to turquoise blue
Luster: Vitreous to pearly

Identified July 3, 2026More mineral →

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Physical properties

Hardness: 6-6.5 on Mohs scale; Color: Pale green to turquoise blue; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 2.56-2.58

Formation & geological history

Formed in granitic pegmatites and metamorphic rocks through the cooling of silica-rich magma; its green color is attributed to the presence of lead and water within the feldspar structure.

Uses & applications

Primarily used as a gemstone for jewelry, beads, cabochons, and as a popular collector's specimen.

Geological facts

Named after the Amazon River, though it was later found that no deposits actually exist there; it is often called the 'Hope Stone' in metaphysical circles.

Field identification & locations

Identified by its distinct grid-like (twinning) patterns on cleavage surfaces and its mottled green-blue color. Common locations include Brazil, Russia, and Colorado (USA).