mineral

Amazonite

Potassium aluminum silicate (Microcline); KAlSi3O8

Hardness: 6-6.5 (Mohs); Color: Pale green to turquoise blue-green with white mottling; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 2.56-2.58

Hardness: 6-6
Color: Pale green to turquoise blue-green with white mottling
Luster: Vitreous to pearly

Identified March 20, 2026More mineral →

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Physical properties

Formation & geological history

Formed in plutonic rocks, primarily granitic pegmatites. The green color is derived from small quantities of lead and water within the feldspar structure during crystallization from magma.

Uses & applications

Commonly used as a gemstone for jewelry (beads, cabochons), ornamental carvings, and as a popular specimen for mineral collectors.

Geological facts

Amazonite is known as the 'Amazon Stone,' though it is not actually found in the Amazon River itself; it was likely confused with other green stones from that region in historical accounts.

Field identification & locations

Identify in the field by its distinct blue-green color and the presence of white streaks or 'schiller' caused by perthitic intergrowth with albite. Found commonly in Brazil, Russia (Ilmen Mountains), and the USA (Pikes Peak, Colorado).

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

mineral