mineral

Amazonite

Potassium Feldspar (Microcline) - K(AlSi3O8)

Hardness: 6-6.5 on Mohs scale; Color: bright teal/green to bluish-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 teal/green to bluish-green often with white streaks
Luster: Vitreous to pearly

Identified March 28, 2026More mineral →

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Physical properties

Formation & geological history

Formed in plutonic rocks, typically pegmatites and granites, through slow cooling of magma. Its distinctive color is caused by the presence of trace amounts of lead and water within the feldspar structure.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons and beads) and as an ornamental stone for carvings and decorative objects.

Geological facts

Also known as 'Amazon Stone', its name is derived from the Amazon River, though no deposits have ever been found there. It has been used for over 2,000 years, with discoveries in ancient Egyptian tombs including King Tutankhamun's funeral mask.

Field identification & locations

Identify in the field by its distinct 'shiller' or schiller effect (a characteristic sheen) and white perthitic streaks. Commonly found in Colorado (Pikes Peak), Russia (Ural Mountains), Brazil, and Madagascar.

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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)]

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Epidote

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

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