Cultured Pearls are spherical in shape. It is less regular and pear shaped. The most common irregularities found in Cultured Pearls are small cavities with a white base. When it is magnified twenty or more times, cultured pearls also display a close pattern of minute, sinuous lines. Their luster is not generally noticeable. This Pearl has highly translucent outer layers because of an excess of water. They are produced by large mollusc, they are often 10-12 millimeters in diameter, and even 15 millimeters, with great luster.
Properties : In pierced cultured pearls, the junction between the external layers of nacre and the uniform nucleus at the center may be quite visible through the drill hole. Sometimes horizontal lines are seen in these pearls. These are the flat parallel layers of the artificial nucleus and have nothing to do with the nucleus of the pearl.
Occurrence: The main center of production for cultured pearls are in Japan, Australia and the coast of India
Value: There is a big difference between Cultured Pearls and that of the cultured pearls, which on average cost at least ten times less. A string of cultured pearls of uniform diameter is worth more than one of graduated diameters and a pair of identical pearls is worth more than two different ones. A thick layer of line usually, makes it an appearance similar to that of natural pearls. Australian cultured pearls are more costly and valuable than pearls found in other parts of the world.