Cultured Pearls: A Guide to Their History, Varieties and Value
https://absolute-pearl.com/blogs/absolute-pearl-blog/cultured-pearls-a-guide-to-their-history-varieties-and-value
WEBFeb 28, 2023 · Cultured pearls are pearls that are grown by inserting a foreign material into a living mollusk, such as an oyster or a mussel. The material can be a piece of shell, a bead or even a tissue graft from another mollusk. The mollusk then secretes nacre around the material to form a pearl sac.
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