mineral

Amazonite

K(AlSi3O8) - Potassium Feldspar (Microcline variant)

Hardness: 6-6.5 on Mohs scale; Color: bright green to blue-green, often with white streaks; Luster: vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 2.56-2.58.

Hardness: 6-6
Color: bright green to blue-green, often with white streaks
Luster: vitreous to pearly

Identified January 23, 2026More mineral →

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Physical properties

Formation & geological history

Formed in deep-seated plutonic rocks, specifically granite pegmatites and syenites through hydrothermal processes. Its distinct color is caused by the presence of trace amounts of lead and water within the feldspar lattice.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons and beads) and as an ornamental stone for carvings. It is also popular among mineral collectors for its vibrant color.

Geological facts

Known as the 'Amazon Stone,' it was named after the Amazon River, though it is not actually found there. It has been used in jewelry since Ancient Egypt; the gold mask of Tutankhamun was inlaid with amazonite.

Field identification & locations

Identify in the field by its distinct 'shiller' or mottled green and white appearance and rectangular cleavage. Commonly found in the Ilmensky Mountains (Russia), Colorado and Virginia (USA), Madagascar, and Brazil.

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Arenite (SiO2 based)

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Epidote

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

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Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

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Metamorphic Rock

Green Apatite on Albite

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

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Epidote

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