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  Pearl FormationHow long does it take an oyster to form a pearl? It can take anywhere from a few months to many years to form a pearl, depending upon its size. And different mollusks produce pearls at different rates. For example, the Black-lipped Pearl Oyster forms one to seven sheets of nacre per day. Environmental conditions affect pearl development, too. In temperate climates, pearls grow more slowly in winter than in summer. Ideally, for most cultured pearls, the “grow out” period lasts between two and three years. back to Fun Facts |
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