mineral

Amazonite

K(AlSi3O8), Microcline Feldspar

Hardness: 6-6.5 Mohs; Color: Teal, green, or blue-green; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

Hardness: 6-6
Color: Teal, green, or blue-green
Luster: Vitreous to pearly

Identified July 9, 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

Hardness: 6-6.5 Mohs; Color: Teal, green, or blue-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 specifically granite pegmatites. Its distinctive color is caused by the presence of lead and water impurities within the feldspar lattice.

Uses & applications

Primarily used as a gemstone for jewelry, cabochons, beads, and ornamental carvings. It is also a popular specimen for mineral collectors.

Geological facts

Named after the Amazon River, though it is not actually found there. It was historically used in ancient Egypt for jewelry and amulets, including items found in King Tutankhamun's tomb.

Field identification & locations

Identify in the field by its distinct grid-like (perthitic) white streaks and its bright teal color. Found commonly in Brazil, Russia, Madagascar, and the USA (notably Colorado and Virginia).