Initial commercial freshwater pearl crops appeared in the 1930s ... they now offer a selection of subtle natural colors. Nucleating an oyster. The Chinese have also begun to nucleate some of ...

Pearl farmers haul out their oyster cages in Ago Bay ... author of a book on pearls (see History of Pearls and Culture of Freshwater Pearls). "I would never attribute it to an unidentified ...

Pearls are made by marine oysters and freshwater mussels as a natural ... their shell or damage to their fragile body. The oyster or mussel slowly secretes layers of aragonite and conchiolin, ...

Most pearls come from oysters, which thrive in both freshwater and saltwater ... It can take up to 24 months for an oyster to produce a pearl up to 5 millimetres in diameter.

The Pinctada maxima oyster can take up to five years to produce a single South Sea pearl, whereas more common freshwater oysters can take as little as three months and create dozens of pearls.