Amazonite

Physical Properties

Hardness: 6-6.5 on Mohs scale; Color: Green to bluish-green; 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, primarily granite and pegmatite, through hydrothermal activity or slow cooling of magma. Its green color is attributed to the presence of lead and water within the feldspar structure.

Uses & Applications

Used predominantly as a gemstone, in jewelry making (beads, cabochons), for ornamental carvings, and as a popular specimen for mineral collectors.

Geological Facts

Namesake of the Amazon River, though it is not actually found there. Most high-quality specimens today come from the Pikes Peak area in Colorado, USA, where it is often found associated with smoky quartz.

Field Identification & Locations

Identify by its distinctive blue-green color and blocky cleavage with 'schiller' or white streaks. Common locations include Brazil, Russia (Urals), Ethiopia, and the USA (Colorado/Virginia).

Identified on: 5/6/2026

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