Amazonite

Microcline (KAlSi3O8) with lead impurities

Rock Type: mineral

Amazonite

Physical Properties

Hardness: 6-6.5 (Mohs scale), Color: Greenish-blue to turquoise-green, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect in two directions.

Formation & Geological History

Formed primarily in pegmatites through the slow cooling of magma. The characteristic color is caused by trace amounts of lead and water within the feldspar crystal lattice.

Uses & Applications

Used extensively in jewelry as cabochons, beads, and carvings. Also popular as decorative ornamental stones and collector specimens.

Geological Facts

Named after the Amazon River, although no deposits have actually been found there. It is known as the 'Stone of Hope' and is often found with smoky quartz or schorl.

Field Identification & Locations

Identify by its bright blue-green color and typical white streaks or grid-like patterns (exsolution lamellae). Commonly found in Russia, Brazil, Ethiopia, and Colorado, USA.

Identified on: 4/29/2026

Mode: Standard