mineral

Amazonite

Microline Feldspar (KAlSi3O8)

Hardness: 6-6.5 on the Mohs scale; Color: turquoise-green to bluish-green; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

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

Identified May 9, 2026More mineral →

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Physical properties

Hardness: 6-6.5 on the Mohs scale; Color: turquoise-green to bluish-green; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

Formation & geological history

Forms primarily in granitic pegmatites and metamorphic rocks. Its distinctive color is attributed to the presence of lead and water within the feldspar structure. Found in Precambrian-aged formations.

Uses & applications

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

Geological facts

Named after the Amazon River, though it is not actually found there. It is often called the 'Amazon Stone'. The green color was long thought to be due to copper, but modern analysis confirmed lead impurities are responsible.

Field identification & locations

Identified in the field by its distinct blue-green color and typical feldspar cleavage. Common locations include Madagascar, Russia, Brazil, and the Pikes Peak region of Colorado, USA.