mineral

Amazonite

Microcline Feldspar (KAlSi3O8)

AI-generated identification · may be incorrect

Hardness: 6 - 6.5 on Mohs scale; Color: Blue-green, turquoise-green with characteristic white perthitic veinlets/streaks; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions intersecting at nearly 90 degrees; Specific Gravity: 2.56 - 2.58.

Hardness: 6 - 6
Luster: Vitreous to pearly

Identified October 3, 2026More mineral →

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Physical properties

Formation & geological history

Formed primarily in plutonic igneous environments, notably granite pegmatites and hydrothermal veins, where it crystallizes slowly under low-temperature conditions. Its distinctive green-blue hue is caused by trace amounts of lead and structural water within the crystal lattice.

Uses & applications

Popular semi-precious ornamental gemstone carved into eggs, spheres, beads, cabochons, and decorative figurines. Highly sought after by mineral collectors and used in holistic lapidary practices.

Geological facts

Named after the Amazon River, although genuine deposits have not been located directly in the river basin. It was widely used by the ancient Egyptians for amulets, beads, and ornamentation, notably found inside King Tutankhamun's tomb.

Field identification & locations

Recognized by its vivid blue-green coloration interspersed with distinct white, grid-like or perthitic exsolution lamellae of albite feldspar. Key commercial localities include the Ilmensky Mountains in Russia, the Pike's Peak region of Colorado (USA), Madagascar, Brazil, and Mozambique.