mineral

Amazonite

K(AlSi3O8) - Potassium Aluminum Silicate

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

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

Identified July 6, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed in plutonic rocks, specifically pegmatites, where minerals crystallize slowly from cooling magma. Its color is attributed to trace amounts of lead and water.

Uses & applications

Primarily used as a gemstone for jewelry, beads, and cabochons, as well as an ornamental stone for carvings and decorative items.

Geological facts

Also known as Amazon stone, it was named after the Amazon River, although no deposits have actually been found there. It is the green variety of Microcline feldspar.

Field identification & locations

Identify by its distinctive blue-green color and white streaks/mottling. Commonly found in Colorado (USA), Madagascar, Russia, and Brazil. Collectors look for vibrant saturation and minimal cracks.