mineral

Amazonite

Microcline (KAlSi3O8)

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

Hardness: 6-6
Color: Green to bluish-green
Luster: Vitreous to pearly

Identified July 21, 2026More mineral →

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Physical properties

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

Formation & geological history

Forms in deep-seated plutonic rocks, primarily granitic pegmatites, where hydrothermal activity allows for large crystal growth. Its green color is attributed to the presence of lead and water within the feldspar structure.

Uses & applications

Used primarily as a gemstone for jewelry, ornamental carvings, and as a popular specimen for mineral collectors.

Geological facts

Amazonite is named after the Amazon River, though it has not actually been found there; it was likely confused with other green stones from the region. It is known as the 'Stone of Hope'.

Field identification & locations

Identified by its distinctive blue-green color and 'Schiller' effect (a slight metallic luster or play of color). It frequently occurs alongside smoky quartz and schorl tourmaline in pegmatites.