Amazonite

Physical Properties

Hardness: 6-6.5 on Mohs scale; Color: Pale green to turquoise blue-green; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

Formation & Geological History

Forms primarily in granitic pegmatites and metamorphic rocks through hydrothermal processes. Its unique color is caused by trace amounts of lead and water within the feldspar structure.

Uses & Applications

Mainly used as a gemstone for jewelry, ornamental carvings, and a popular specimen for mineral collectors.

Geological Facts

Named after the Amazon River, although ironically no deposits have been found there; the name likely refers to its green color resembling the jungle or other green stones once found in the region.

Field Identification & Locations

Identify in the field by its distinct blue-green color often accompanied by white streaking (exsolution lamellae). Commonly found in Russia (Urals), USA (Colorado/Virginia), Madagascar, and Brazil.

Identified on: 5/2/2026

Mode: Standard