Rock Identifier
Amazonite (Microcline feldspar, KAlSi3O8) — mineral
mineral

Amazonite

Microcline feldspar, KAlSi3O8

AI-generated identification · may be incorrect

Hardness 6 on Mohs scale. Displays bright turquoise-green to blue-green color with characteristic white grid-like or mottled striations. Vitreous to pearly luster with triclinic crystal structure.

Identified More mineral →
Explore Amazonite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Hardness 6 on Mohs scale. Displays bright turquoise-green to blue-green color with characteristic white grid-like or mottled striations. Vitreous to pearly luster with triclinic crystal structure.

Formation & geological history

Forms in pegmatites and granitic rocks through hydrothermal processes and slow cooling of magma rich in potassium and lead.

Uses & applications

Used primarily as a semi-precious gemstone in cabochons, beads, and ornamental carvings.

Geological facts

Its distinct green color was historically attributed to copper, but is now known to be caused by trace amounts of lead and water.

Field identification & locations

Identify by its unique blue-green color and typical grid-like twinning patterns. Found globally in the US, Russia, Brazil, and Madagascar.