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Write the composition of pearl.

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Write the composition of pearl.

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Composition of pearl: Pearl comprises water, organic matter, calcium carbonate, and residue.

  1. Water: 2 – 4%
  2. Organic matter: 3.5-5.9%
  3. Calcium Carbonate: 90%
  4. Residue: 0.1 – 0.8%, Carbonate: 90%.
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