mineral

Amazonite

Microcline (KAlSi3O8) with lead impurities

AI-generated identification · may be incorrect

Hardness: 6-6.5 (Mohs); Color: blue-green to green; Luster: vitreous to pearly; Crystal structure: triclinic; Cleavage: perfect in two directions; SG: 2.56-2.58

Hardness: 6-6
Color: blue-green to green
Luster: vitreous to pearly

Identified July 9, 2026More mineral →

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Physical properties

Hardness: 6-6.5 (Mohs); Color: blue-green to green; Luster: vitreous to pearly; Crystal structure: triclinic; Cleavage: perfect in two directions; SG: 2.56-2.58

Formation & geological history

Forms in granitic pegmatites and metamorphic rocks through slow cooling of magma, where small amounts of lead replace potassium to create the color.

Uses & applications

Commonly used as a gemstone for cabochons, beads, and carvings, or as a decorative ornamental stone.

Geological facts

Named after the Amazon River, though it was later discovered not to occur there naturally. Its color is thought to be derived from lead and water content in the feldspar lattice.

Field identification & locations

Identified by its distinctive bluish-green color and 'Schiller' effect (fine white streaks of albite). Commonly found in Russia, Brazil, and Colorado (Pikes Peak).