mineral

Peach moonstone (polished/tumbled feldspar)

Orthoclase feldspar, KAlSi₃O₈ (possibly with albite intergrowths)

AI-generated identification · may be incorrect

Likely Mohs 6–6.5; pale peach-pink, translucent to opaque, with a vitreous to pearly sheen. Feldspar has a monoclinic crystal structure and two good cleavage directions; the photo’s diffuse lighting makes its identity uncertain.

Identified September 25, 2026More mineral →

Explore Peach moonstone (polished/tumbled feldspar) in the encyclopedia →

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Physical properties

Formation & geological history

Forms in silica-rich igneous rocks, especially granites and pegmatites, as magma cools; specimens may be billions of years old. The rounded surface indicates polishing rather than natural crystal form.

Uses & applications

Used for beads, cabochons, and decorative carvings; feldspar is also an important industrial raw material for glass and ceramics.

Geological facts

Moonstone’s characteristic shimmer, called adularescence, comes from light scattering within microscopic feldspar layers; it is not clearly visible here.

Field identification & locations

A smooth, pale peach color and possible internal sheen are consistent with peach moonstone. Feldspars occur worldwide, including India, Madagascar, and Sri Lanka; confirm by checking for adularescence and hardness.