mineral

Amazonite (Microcline Feldspar)

Microcline Feldspar - KAlSi3O8

AI-generated identification · may be incorrect

Hardness: 6-6.5 on Mohs scale. Color: Pale blue-green to teal with white streaking. Luster: Vitreous to pearly. Crystal System: Triclinic. Cleavage: Perfect at nearly 90 degrees. Specific Gravity: 2.56-2.58.

Hardness: 6-6
Color: Pale blue-green to teal with white streaking
Luster: Vitreous to pearly

Identified July 27, 2026More mineral →

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Physical properties

Formation & geological history

Formed in igneous environments, primarily pegmatites and granites, as well as metamorphic rocks. The bluish-green color is derived from trace amounts of lead and water within the feldspar structure.

Uses & applications

Used primarily as an ornamental stone, for lapidary work, cabochon gems, carvings, and popular among mineral collectors and crystal enthusiasts.

Geological facts

Named after the Amazon River, although no deposits have actually been found there. Ancient Egyptians used amazonite for carving beads, amulets, and making jewelry, including pieces found in King Tutankhamun's tomb.

Field identification & locations

Identified by its characteristic grid-like microcline twinning structure (perthitic textures), pale mint green-blue hue, and vitreous to pearly sheen on cleavage planes. Commonly found in Brazil, Russia, Madagascar, Mozambique, and Colorado, USA.