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Cultured pearls vary in size, and the difference in value is great
For ordinary pearls, whether cultured or naturally formed, the most common size is 0.4-1.0 cm in diameter; the smallest ones are like millet grains and are called millet pearls...
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The quality of cultured pearls is generally very high
Pearl farms in northern Australia welcomed the 2017 harvest season, and one farm named Cygnet Bay also harvested two rare natural...