mineral

Amazonite

Potassium Feldspar (KAlSi3O8)

Hardness: 6-6.5 (Mohs scale); Color: Bluish-green, green, or turquoise; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

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

Identified April 29, 2026More mineral →

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Physical properties

Hardness: 6-6.5 (Mohs scale); Color: Bluish-green, green, or turquoise; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

Formation & geological history

Formed through the cooling of pegmatites (intrusive igneous rocks) where large crystals grow. The color is thought to be caused by lead impurities and water within the feldspar lattice.

Uses & applications

Predominantly used as a gemstone for jewelry, ornamental carvings (like the skull and snake shown), and collected as mineral specimens.

Geological facts

Amazonite is known as the 'Stone of Hope' or 'Amazon Stone,' although it is not actually found in the Amazon River; it was named after the region because of its resemblance to other green stones found there. It is a variety of microcline feldspar.

Field identification & locations

Identify in the field by its distinct blue-green color and light-colored streaks or grid-like inclusions (perthitic texture). Common locations include Russia, Brazil, Ethiopia, and Colorado, USA (Pikes Peak).