fossil

Pearl-bearing oyster shell

Nacreous shell, primarily aragonite (CaCO₃), with natural pearls (calcium-carbonate nacre)

AI-generated identification · may be incorrect

Hardness is about 3–4 Mohs; pearly luster, iridescent white, cream, pink, lavender, and gray colors, with layered aragonite nacre and conchoidal-toirregular fracture. The rounded beads are pearls, composed of concentric nacre layers.

Identified August 27, 2026More fossil →

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At a glance

Common name: Pearl-bearing oyster shell
Scientific name: Nacreous shell, primarily aragonite (CaCO₃), with natural pearls (calcium-carbonate nacre)
Category: fossil
Identified: August 27, 2026
Method: Standard

AI Estimated Value

Approximately $5–$50 as a decorative shell; $20–$500+ if the attached pearls are verified natural and attractive, with exceptional jewelry-grade specimens worth much more.

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

This is a biological carbonate shell rather than an igneous, sedimentary, or metamorphic rock; the shell formed during the oyster’s life, while pearls developed around irritants. The image alone cannot establish its geological age; it appears modern or recently collected.

Uses & applications

Shells are used decoratively, for buttons, inlay, and calcium-carbonate products; pearls are used in jewelry and ornamentation. Value depends strongly on pearl luster, shape, size, color, surface quality, and whether they are natural or cultured.

Geological facts

Pearls and mother-of-pearl are both nacre, but pearls form inside tissue while nacre lines the shell. The specimen appears to show multiple small blister or attached pearls on nacreous shell material.

Field identification & locations

Identify it by strong iridescence, thin layered shell structure, low hardness, and lack of crystal faces; a knife can scratch nacre, unlike quartz. Common sources include oyster beds in the Indo-Pacific, Gulf of Mexico, and other coastal waters.