freshwater pearls }
freshwater pearls form in various species of freshwater mussels, which live in lakes, rivers, ponds and other bodies of fresh water. cultured pearls are the response of the shell to a tissue implant. a tiny piece of tissue from a donor shell is transplanted into a recipient shell, causing a pearl sac to form into which the tissue precipitates calcium carbonate.
to keep your organic items beautiful, take in account that the material is porous. make sure to : sleep, shower, swim, perform household chores, sport without them, keep them away of lotions + hairspray.
2,5 - 5 on the scale of mohs.