How pearls form — 4 short rephrasings for a 7-year-old

Four short, child-friendly ways to say how tiny grains of sand become shiny pearls inside oysters.

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  • A tiny grain of sand inside an oyster becomes a shiny pearl.
  • An oyster covers sand with glossy layers until it turns into a pearl.
  • Sand that gets into an oyster is wrapped in shiny layers and becomes a pearl.
  • Tiny sand in an oyster is coated with smooth layers to make a pearl.

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