fossil

Red coral bead strand (likely dyed or treated coral)

Corallium spp. (calcareous coral skeleton; primarily CaCO₃)

AI-generated identification · may be incorrect

Opaque to slightly translucent red, polished spherical beads with a smooth surface and vitreous-to-waxy luster; Mohs hardness about 3–4. Coral is not a crystal mineral and may show faint growth lines or pores.

Identified October 15, 2026More fossil →

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Physical properties

Formation & geological history

Marine coral skeletons accumulate in colonies, commonly in deep or temperate waters; coral is geologically recent compared with most rocks. The beads have been cut and polished, and their color may be enhanced.

Uses & applications

Used for jewelry and ornament; natural red coral is also valued by collectors, while harvesting is regulated in many regions.

Geological facts

Coral is an organic carbonate material, not a true mineral; many imitation beads are glass, resin, or dyed other materials.

Field identification & locations

The photo alone cannot confirm coral: look for natural growth texture and avoid relying on color; gemological testing can distinguish it from imitations. Red coral occurs in the Mediterranean and western Pacific.