mineral

Amazonite

K(AlSi3O8), Microcline

Hardness: 6-6.5 on Mohs scale; Color: Green to blue-green with white streaks; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions.

Hardness: 6-6
Color: Green to blue-green with white streaks
Luster: Vitreous to pearly

Identified May 1, 2026More mineral →

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Physical properties

Hardness: 6-6.5 on Mohs scale; Color: Green to blue-green with white streaks; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions.

Formation & geological history

Formed in plutonic igneous rocks, especially granites and pegmatites, through the cooling of silica-rich magma. The color is attributed to the presence of lead and water within the feldspar structure.

Uses & applications

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

Geological facts

Named after the Amazon River, though it is not actually found there. It is known as the 'Stone of Hope' and has been used in jewelry since ancient Egypt, notably found in King Tutankhamun's funeral mask.

Field identification & locations

Identify by its distinct sea-foam green color and characteristic white 'perthitic' streaks or grid-like patterns. Common locations include Brazil, Russia, Madagascar, and the USA (Colorado and Virginia).