mineral

Amazonite

Microcline (KAlSi3O8 variant)

Hardness: 6-6.5; Color: turquoise, sea-foam green, or bluish-green with white streaks; Luster: Vitreous to pearly; Crystal structure: Triclinic; Specific gravity: 2.56-2.58.

Hardness: 6-6
Luster: Vitreous to pearly

Identified June 18, 2026More mineral →

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Physical properties

Hardness: 6-6.5; Color: turquoise, sea-foam green, or bluish-green with white streaks; Luster: Vitreous to pearly; Crystal structure: Triclinic; Specific gravity: 2.56-2.58.

Formation & geological history

Formed primarily in granitic rocks and pegmatites through the slow cooling of magma, where small amounts of lead and water are trapped in the feldspar crystal lattice.

Uses & applications

Commonly used as a gemstone for jewelry, beads, cabochons, and ornamental carvings. It is also popular among crystal collectors.

Geological facts

The name is derived from the Amazon River, though no deposits are actually found there. It is sometimes called the 'Stone of Hope' and is the state gemstone of Colorado.

Field identification & locations

Identified by its distinctive blue-green color and ' Schiller effect' or grid-like white streaks (perthitic structure). It is commonly found in the Pikes Peak region of Colorado, Brazil, Russia, and Madagascar.