Pearl Species and Localities

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All GIA pearl reports include details about the mollusk (if determinable). The chart below and the downloadable PDF include more information about pearl species, localities, and growth, along with definitions for the 7 Pearl Value Factors™ and terminology GIA uses to describe your pearl.

Map and chart with information about pearl species and localities

This information was included with Pearl Identification Reports and Pearl Classification Reports until March 2013.

Corundum Source Types

Learn more about corundum sources and GIA’s source type classification system, detailing the relationship between source type and geographic origin.

Explore pearl history, research, quality factors, and more in the GIA Gem Encyclopedia.

Pearl Species and Localities

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