Natural Pearls and Cultured Pearls Classifying Guide released by the CIBJO Pearl Commission CIBJO’s Pearl Commission has released the first edition of the CIBJO Guide for Classifying Natural Pearls and Cultured Pearls By: Diamond World News Service
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The 62-page illustrated document provides an overarching view of natural and cultured pearls, from both seawater and freshwater sources, and highlights the important parameters by which their appearance can be described and assessed in terms of physical dimensions and quality. It is designed to serve as a reference point and a source of information for both the the general public and the jewelry trade.