gemstone

Likely moonstone ring

Moonstone, a feldspar variety with adularescence; typically orthoclase (KAlSi₃O₈), sometimes with albite intergrowths

AI-generated identification · may be incorrect

The cabochon shows a silvery-white sheen consistent with adularescence. Moonstone has Mohs hardness 6–6.5, vitreous-to-pearly luster, and monoclinic feldspar structure with two cleavage directions; the photo cannot confirm the stone’s identity.

Identified September 25, 2026More gemstone →

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At a glance

Common name: Likely moonstone ring
Scientific name: Moonstone, a feldspar variety with adularescence; typically orthoclase (KAlSi₃O₈), sometimes with albite intergrowths
Category: gemstone
Identified: September 25, 2026
Method: Standard

AI Estimated Value

Approximately $10–$150 for a modest moonstone cabochon; the complete ring’s value depends on verified stone identity, metal, workmanship, and condition.

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

Moonstone forms in igneous rocks, especially pegmatites, as feldspar crystallizes and develops fine intergrowths that scatter light. Geological ages vary with the source deposit.

Uses & applications

Used in cabochon jewelry and collected for its shifting sheen; the ring’s ornate metal setting is separate from the geological specimen.

Geological facts

The floating glow is called adularescence and is strongest when the stone is cut as a smooth cabochon.

Field identification & locations

Look for a soft, moving blue-white or silver glow as the stone is tilted; common sources include Sri Lanka, India, Madagascar, and Myanmar. A gemological test is needed to distinguish moonstone from other white cabochon gems.