Rock Identifier
Peach Moonstone (Feldspar variety) (Orthoclase Feldspar (KAlSi3O8) with inclusions) — mineral
mineral

Peach Moonstone (Feldspar variety)

Orthoclase Feldspar (KAlSi3O8) with inclusions

Hardness: 6.0 - 6.5 (Mohs scale); Color: Peach, salmon, pinkish-orange; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Two directions at 90 degrees; Specific Gravity: 2.55-2.63.

Hardness
6
Color
Peach, salmon, pinkish-orange
Luster
Vitreous to pearly
Identified More mineral →

Identify your own rocks.

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

App StoreGoogle Play

Physical properties

Hardness: 6.0 - 6.5 (Mohs scale); Color: Peach, salmon, pinkish-orange; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Two directions at 90 degrees; Specific Gravity: 2.55-2.63.

Formation & geological history

Formed from crystallizing magma in granitic pegmatites or metamorphic rocks. The 'moonstone' effect (adularescence) is caused by the intergrowth of two types of feldspar that separate as the magma cools, scattering light.

Uses & applications

Primarily used as a semi-precious gemstone in jewelry (rings, pendants, beads) and as a decorative or metaphysical healing stone for collectors.

Geological facts

Peach moonstone is known for its mystical 'glow.' In some cultures, it was believed that moonstones were formed from solidified moonbeams. It is the birthstone for June in many traditions.

Field identification & locations

Identify by its distinctive peach color and internal shimmery glow when rotated under light. Often found in India, Sri Lanka, Madagascar, and Tanzania. Look for the 'adularescent' flash and 90-degree cleavage planes.

More like this

Other mineral specimens

Sandstone (with potential mineral staining/concretions) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary
Schist (Schist) — Metamorphic

Schist

Schist

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

Epidote

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

metamorphic
Nephrite Jade (Nephrite) — Mineral/Rock

Nephrite Jade

Nephrite

Mineral/Rock
Banded Gneiss (River Rock/Pebble) (Gneiss (specifically a banded variety often found as a river rock)) — Metamorphic 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

Green Apatite on Albite

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

mineral