Trade Organisations
GIA introduces expanded Nacre Scale to all pearl classification reports
Prompted by observations and requests from members of the global pearl trade, the new scale will describe and classify the continuity and quality of the nacre in a way that is ‘more aligned’ with other quality factors
GIA (Gemological Institute of America) has expanded its approach to evaluating nacre on all pearl classification reports, providing an important update to the institute’s comprehensive pearl classification system, the GIA 7 Pearl Value Factors.
You'll need to
subscribe to unlock this content. Already subscribed? Login?
