A recent development in pearl testing is the application of computer tomography + it enables a three-dimensional image of the pearl’s (Akoya cultured, South Sea, Tahitian, Cultured Blister pearls) structure to be clearly discerned + it differentiates between natural and cultured pearls + it measures nacre thickness + it’s a very expensive methodology + it’s widely used in medicine and other industries.
Useful link:
www.jcat.org
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