mineral

Amazonite

Amazonite (Microcline Feldspar) - KAlSi3O8

AI-generated identification · may be incorrect

Hardness: 6-6.5 on Mohs scale; Color: teal, bluish-green, or green with white streaks; Luster: Vitreous to Pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions.

Hardness: 6-6
Color: teal, bluish-green, or green with white streaks
Luster: Vitreous to Pearly

Identified July 19, 2026More mineral →

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Physical properties

Hardness: 6-6.5 on Mohs scale; Color: teal, bluish-green, or green with white streaks; Luster: Vitreous to Pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions.

Formation & geological history

Forms primarily in granitic pegmatites, hydrothermal veins, and occasionally in metamorphic rocks. The green color is attributed to the presence of small amounts of lead and water within the feldspar structure.

Uses & applications

Commonly 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 sometimes called 'Amazon Stone.' It was used by ancient Egyptians for jewelry and was found in King Tutankhamun's tomb.

Field identification & locations

Identified by its distinct blue-green color and 'Schiller' effect (a subtle white streaking or shimmering caused by perthitic texture). Notable locations include Colorado (USA), Brazil, Russia, and Madagascar.