gemstone

Moonstone cabochon ring

Adularia moonstone, potassium feldspar (orthoclase, KAlSi₃O₈), possibly imitation or another white translucent gemstone

AI-generated identification · may be incorrect

Milky white, translucent, vitreous-to-pearly luster with a smooth cabochon and bluish adularescence; Mohs hardness 6–6.5, monoclinic crystal structure, two good cleavage directions, specific gravity about 2.55–2.63.

Identified September 8, 2026More gemstone →

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At a glance

Common name: Moonstone cabochon ring
Scientific name: Adularia moonstone, potassium feldspar (orthoclase, KAlSi₃O₈), possibly imitation or another white translucent gemstone
Category: gemstone
Identified: September 8, 2026
Method: Standard

AI Estimated Value

Approximately $30–$200 for a commercial moonstone ring; $200–$1,000+ for fine blue-sheen natural moonstone with precious-metal settings.

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

Natural moonstone forms in slowly cooled, potassium-rich igneous rocks such as pegmatites and granites; its sheen results from light scattering between intergrown feldspar phases. Gem-quality material is commonly Cenozoic to older, depending on locality.

Uses & applications

Used primarily in jewelry and ornamental cabochons; the surrounding stones appear to be small faceted accent gems, possibly diamonds or simulants, set in metal.

Geological facts

The floating blue-white glow is called adularescence, named after Adular Mountain in Switzerland. The image alone cannot confirm whether this is natural moonstone, opalite glass, or another white gemstone.

Field identification & locations

Identify natural moonstone by its internal floating sheen, feldspar-like cleavage, moderate hardness, and lack of perfectly uniform transparency; common sources include Sri Lanka, India, Madagascar, Myanmar, and Tanzania. Gemological testing is needed for certainty.