mineral

Amazonite

Amazonstone (KAlSi3O8)

Hardness: 6 to 6.5 on the Mohs scale. Color: Green, blue-green, or turquoise. Luster: Vitreous to pearly. Crystal structure: Triclinic. Cleavage: Perfect in two directions. Specific gravity: 2.56 to 2.58.

Hardness: 6 to 6
Color: Green, blue-green, or turquoise
Luster: Vitreous to pearly

Identified January 24, 2026More mineral →

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Physical properties

Formation & geological history

Amazonite is a variety of Microcline feldspar. It forms primarily in granitic pegmatites and deep-seated igneous rocks. Its distinct color is caused by the presence of small amounts of lead and water within the feldspar structure.

Uses & applications

Used widely in the jewelry industry for beads, cabochons, and carvings. It is a popular ornamental stone and is highly valued by crystal collectors and lapidary artists.

Geological facts

Historically, it was named after the Amazon River, although it is not actually found there. It is often referred to as the 'Stone of Hope' and has been used in jewelry since the time of Ancient Egypt.

Field identification & locations

Identify it by its characteristic blue-green hue and white 'schiller' or streaky appearance caused by exsolution lamellae (perthitic texture). Common locations include Russia, Madagascar, Brazil, and Pikes Peak, Colorado, USA.