mineral

Amazonite

Microcline (KAlSi3O8 variant)

Hardness: 6-6.5 Mohs scale; Color: bright green, bluish-green, or turquoise; Luster: vitreous; Crystal system: triclinic; Cleavage: two planes at nearly 90 degrees; Specific gravity: 2.56-2.58

Hardness: 6-6
Color: bright green, bluish-green, or turquoise
Luster: vitreous

Identified June 7, 2026More mineral →

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Physical properties

Hardness: 6-6.5 Mohs scale; Color: bright green, bluish-green, or turquoise; Luster: vitreous; Crystal system: triclinic; Cleavage: two planes at nearly 90 degrees; Specific gravity: 2.56-2.58

Formation & geological history

Found primarily in granitic pegmatites and metamorphic rocks. Its color is attributed to the presence of lead and water within the feldspar structure during the cooling of magma.

Uses & applications

Commonly used as a gemstone for jewelry (cabochons and beads), ornamental carvings, and a popular collector's mineral due to its distinct color.

Geological facts

Amazonite is named after the Amazon River, though no deposits have actually been found there; it was likely confused with other green stones. It is often called the 'Hope Stone'.

Field identification & locations

Identified in the field by its distinct 'schiller' effect (pearly luster on cleavage planes) and its pale green to turquoise color with white streaks or 'veins'. Found in Brazil, Russia, Madagascar, and the USA (Colorado).