mineral

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Hardness: 6-6.5 (Mohs scale); Color: Turquoise 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: Turquoise to bluish-green, often with white streaks
Luster: Vitreous to pearly

Identified March 24, 2026More mineral →

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Physical properties

Formation & geological history

Formed in plutonic rocks, specifically granite pegmatites and occasionally schists; its color is derived from lead and water impurities. It occurs globally in deposits spanning various geological ages.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons and beads) and as a decorative stone for ornamental carvings. Highly valued by crystal collectors for its aesthetic appeal.

Geological facts

Also known as 'Amazon Stone', it was named after the Amazon River, though no deposits have actually been found there. It was used in Ancient Egypt for jewelry and funerary items, including small beads found in Tutankhamun's tomb.

Field identification & locations

Identify in the field by its distinct 'shiller' or mottled green color with white zig-zag streaks (perthitic texture). Common locations include Russia, Madagascar, Brazil, and Pikes Peak, Colorado (USA). Collectors look for deep color saturation and minimal fractures.

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

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Mineral/Rock

Banded Gneiss (River Rock/Pebble)

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

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

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