Oval pearl has ends that are narrower than the center. They are classified by experts as "Symmetrical". Oval pearls can form when two pearls in the same mollusc join together.
Oval pearl is sometimes known as rice pearls. It comes from the very early days of Chinese freshwater pearl production when large numbers of low quality pearls entered the market and were derided as 'rice-crispies' after the cereal.

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