mineral

Amazonite

Microcline (variety of Potassium Feldspar), KAlSi3O8

AI-generated identification · may be incorrect

Hardness: 6-6.5 Mohs scale. Color: Green to blue-green 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: Green to blue-green with white streaks
Luster: Vitreous to pearly

Identified July 21, 2026More mineral →

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Physical properties

Hardness: 6-6.5 Mohs scale. Color: Green to blue-green with white streaks. Luster: Vitreous to pearly. Crystal structure: Triclinic. Cleavage: Perfect in two directions. Specific Gravity: 2.56-2.58.

Formation & geological history

Forms in granitic magmas, specifically in pegmatites and hydrothermal veins. Its distinct color is attributed to the presence of small amounts of lead and water within the feldspar structure. Most specimens are from the Phanerozoic eon.

Uses & applications

Primary use is in jewelry as cabochons, carvings, and beads. It is also a very popular specimen for mineral collectors due to its unique turquoise-like color.

Geological facts

Also known as Amazon Stone, it was originally named after the Amazon River, although no deposits have actually been found there. It was used in jewelry in ancient Egypt and the tomb of Tutankhamun.

Field identification & locations

Identify by its distinctive blue-green color and the presence of white, wiggly streaks (exsolution lamellae). Commonly found in the Ilmen Mountains (Russia), Colorado (USA), and Madagascar.