mineral

Amazonite

Microcline (KAlSi3O8)

Hardness: 6-6.5; Color: Blue-green, turquoise, or green; Luster: Vitreous; Crystal System: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

Hardness: 6-6
Color: Blue-green, turquoise, or green
Luster: Vitreous

Identified April 5, 2026More mineral →

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Physical properties

Hardness: 6-6.5; Color: Blue-green, turquoise, or green; Luster: Vitreous; Crystal System: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

Formation & geological history

Formed primarily in pegmatites under deep-seated igneous conditions where cool hydrothermal vents allow for the crystallization of potassium feldspars featuring trace amounts of lead (which causes the color).

Uses & applications

Predominantly used as a gemstone for jewelry, ornamental carvings, and as a popular specimen for mineral collectors and metaphysical practitioners.

Geological facts

Also known as 'Amazon Stone', it was named after the Amazon River, although it is not actually found there. The source of the color was debated for years but is now believed to be from trace lead and water within the feldspar structure.

Field identification & locations

Identify by its distinct blue-green color and 'Schiller' effect (a pearly sheen caused by light reflecting from internal structures). Common locations include Colorado (USA), Brazil, Russia, and Madagascar.