mineral

Amazonite

Microcline (var. Amazonite) - KAlSi3O8

Hardness: 6-6.5 (Mohs); Color: Pale green to bluish-green (teal); Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions (near 90 degrees); Specific Gravity: 2.56-2.58.

Hardness: 6-6
Color: Pale green to bluish-green (teal)
Luster: Vitreous to pearly

Identified July 6, 2026More mineral →

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Physical properties

Formation & geological history

Typically forms in granitic pegmatites and hydrothermal veins. Its distinct color is attributed to the presence of small amounts of lead and water within the feldspar structure.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons, beads) and as a lapidary material for carvings and ornamental objects. It is a popular specimen for mineral collectors.

Geological facts

Named after the Amazon River, though it is not actually found there. It was anciently used by Egyptians for jewelry and amulets. The color can fade if exposed to high heat.

Field identification & locations

Identified by its unique 'grid-like' or mottled mint-green color and pearly luster on cleavage planes. Common locations include Russia (Urals), Brazil, Madagascar, and the United States (Colorado).