mineral

Amazonite

Microcline Feldspar (KAlSi3O8)

Hardness: 6-6.5 (Mohs scale), Color: Green, blue-green, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect in two directions, Specific gravity: 2.56-2.58

Hardness: 6-6

Identified July 24, 2026More mineral →

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Physical properties

Hardness: 6-6.5 (Mohs scale), Color: Green, blue-green, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect in two directions, Specific gravity: 2.56-2.58

Formation & geological history

Forms in granitic pegmatites and some other igneous rocks. The green color is often attributed to trace amounts of lead and water.

Uses & applications

Used primarily as a gemstone for jewelry and ornamental carving, as well as a popular mineral for collectors.

Geological facts

Amazonite is named after the Amazon River, although it is doubtful that green feldspar occurs in the Amazon area. It has been used for over 2,000 years in jewelry and ornamental objects.

Field identification & locations

Identifiable by its distinct blue-green color and cleavage planes. Commonly found in pegmatite veins in locations such as Colorado (USA), Russia, Madagascar, and Brazil.