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Mother-of-pearl is similar to pearls in that it’s made of the same stuff. But in many ways, mother-of-pearl is its own ‘gemstone’. Perfect for unique jewelry, stylish craft, and beautiful decor, mother-of-pearl has many uses. Mother-of-pearl is made of aragonite, a type of calcium carbonate, formed by the pearl oyster, as well as freshwater pearl mussels and abalone. Nacre is secreted by the mollusk as a defense mechanism against irritants and abrasions that find their way into the shell. Over time, the creature secretes layers of nacre which smoothen the surface of the shell and entombs any irritants that cling to the inner surface of the shell.
Is the mother-of-pearl better than pearls, because it’s the mother? No, mother-of-pearl isn’t better than pearls because it’s quite a different type of stone. Although the two are made of the same material and from the same creature, there are many differences in how they’re formed and valued.