mineral

Amazonite

Microcline Feldspar (KAlSi3O8)

Mohs hardness of 6 to 6.5, light pale turquoise-green color, vitreous to pearly luster, triclinic crystal system, perfect cleavage in two directions at nearly 90 degrees, specific gravity of approximately 2.56-2.58.

Identified July 22, 2026More mineral →

Explore Amazonite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed in igneous pegmatites and metamorphic environments through crystallization of potassium-rich fluids containing trace amounts of lead and water, which impart its distinctive green-blue hue.

Uses & applications

Used primarily as a gemstone, for decorative carvings, cabochons, beads, lapidary arts, and as a popular mineral specimen for collectors.

Geological facts

Amazonite is named after the Amazon River, where green stones were historically reported, although true microcline amazonite deposits are not found directly in the river itself. Its pale minty blue-green color is caused by trace amounts of lead and water trapped in the feldspar structure.

Field identification & locations

Identified in the field by its pale blue-green color, blocky feldspar fracture, and vitreous luster. Commonly found in pegmatite deposits in Colorado and Virginia (USA), Brazil, Madagascar, and Russia. Small raw pieces like this are easy for beginner collectors to find and identify.