gemstone

Red coral earrings

Corallium rubrum or related precious coral (calcareous coral skeleton; primarily aragonite, CaCO₃)

AI-generated identification · may be incorrect

Polished, opaque deep-red organic gemstone with a vitreous-to-waxy luster; Mohs hardness about 3–4, composed of dense fibrous aragonite rather than crystals. The surface shows characteristic fine growth structure and is set in decorative metal fittings.

Identified September 12, 2026More gemstone →

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At a glance

Common name: Red coral earrings
Scientific name: Corallium rubrum or related precious coral (calcareous coral skeleton; primarily aragonite, CaCO₃)
Category: gemstone
Identified: September 12, 2026
Method: Standard

AI Estimated Value

Approximately $30–$150 for these earrings if genuine common coral and silver-plated fittings; $200–$1,000+ if verified high-quality Mediterranean Corallium rubrum, depending on provenance and metal.

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

Precious coral forms as branching marine colonies in slowly growing deep-water environments, especially the Mediterranean and western Pacific; specimens may be centuries old. These earrings are shaped and polished human-processed coral, not a rock in the strict geological classification.

Uses & applications

Used for jewelry, ornament, and carving; coral beads have cultural and historical significance. High-quality natural coral is valued more than dyed, reconstituted, or imitation material.

Geological facts

Natural red coral can darken or develop a mottled patina with age. Many modern pieces are dyed bamboo coral, resin-filled coral, or plastic, and harvesting is regulated in many regions.

Field identification & locations

Look for natural variation, fine longitudinal grain, low hardness, and warm coloration; plastic feels lighter and may show bubbles, while glass is harder. A gemological test is needed to distinguish Corallium from dyed substitutes.