Gem-name guide / Organic / biogenic

Pearl

Pearl is included in GIA’s gem encyclopedia. Read the linked GIA guide for identification and gemological context.

Material or mineral family: Pearl
Name classification: Organic / biogenic

This entry is not linked to a single mineral species. A gem name can refer to a group, a mixture, natural glass or biological material.

Read the gemological source ↗

Names describe materials, not the authenticity, treatment, provenance or quality of a particular specimen. Physical properties vary for mixed materials; values absent from this guide have not been estimated.

Reference snapshot: September 2026. Source dates and uncertainties are retained in the record.