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Reza🎩
@reza7979
When a foreign object such as a particle of sand is placed between the shell and its shell, the animal secretes layers composed of the horn organic substance conchiulin and calcite or aragonite crystals around the foreign object. A pearl is gradually formed from these concentric layers
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shadmehr
@shadmehr
Pearls are really amazing and have a lot of value and everyone would like to have some of them🔥💯 387 $DEGEN
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