mineral

Amazonite

Potassium Feldspar (Microcline), K(AlSi3O8)

Hardness: 6-6.5 on Mohs scale; Color: blue-green to turquoise with white streaks; Luster: vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 2.56-2.58

Hardness: 6-6
Color: blue-green to turquoise with white streaks
Luster: vitreous to pearly

Identified March 25, 2026More mineral →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Formed in deep-seated igneous rocks like pegmatites through the slow cooling of magma. Its distinct blue-green color is attributed to small amounts of lead and water within the feldspar structure.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons, beads) and as an ornamental stone for carvings. It is a popular specimen for mineral collectors due to its vibrant color.

Geological facts

Named after the Amazon River, though it is not actually found there. It was used by Ancient Egyptians for jewelry and amulets, and was one of the stones used in the breastplate of the High Priest Aaron.

Field identification & locations

Identify by its unique 'schiller' or grid-like white patterns (perthitic texture) against the green background. Found commonly in the Pike's Peak region of Colorado, Brazil, and Madagascar. Collectors should look for intense blue-green color and sharp crystal faces.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

mineral