Here is a list of pearl terms that might help you better understand this site and the discussions within the community forum. It is compiled from multiple sources and we believe it to be one of the most comprehensive lists available.
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Unio: Genus in the Unionidae freshwater mussel family. Several species in the genus produce pearls.
underwater platform: Used in French Polynesia as a temporary care station from which mollusks are suspended after implantation of a bead nucleus and donor-mollusk tissue piece.
uroko: Japanese term for scaly spots on akoya cultured pearls.