mineral

Polished pink feldspar (likely moonstone/sunstone-type feldspar)

Alkali feldspar, commonly orthoclase or microcline; KAlSi₃O₈

AI-generated identification · may be incorrect

Salmon-pink, polished, and vitreous to pearly, with visible cleavage-like internal planes and darker iron-stained areas. Hardness is about 6–6.5 Mohs; feldspar is monoclinic or triclinic, with two good cleavage directions and specific gravity around 2.55–2.63.

Identified September 21, 2026More mineral →

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At a glance

Common name: Polished pink feldspar (likely moonstone/sunstone-type feldspar)
Scientific name: Alkali feldspar, commonly orthoclase or microcline; KAlSi₃O₈
Category: mineral
Identified: September 21, 2026
Method: Standard

AI Estimated Value

About $3–$15 for a small polished common specimen; $20–$75 if it displays strong moonstone adularescence or attractive lapidary quality.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Formed by crystallization in silica-rich igneous rocks such as granite and pegmatite, generally during Precambrian to younger geological events. The rounded shape is human-polished/tumbled.

Uses & applications

Used as a decorative stone, cabochon, lapidary material, and inexpensive collectible; feldspar is also important industrially in glass and ceramics.

Geological facts

The image does not show diagnostic blue adularescence or strong aventurescence, so a precise variety cannot be confirmed. It may be marketed as pink feldspar, pink moonstone, or orthoclase.

Field identification & locations

Identify by its pink color, glassy luster, cleavage, and moderate hardness; it should scratch glass but not quartz. The Niagara–Hamilton region commonly contains glacially transported granitic and metamorphic pebbles, making feldspar plausible, though this polished specimen may have originated elsewhere.