The freshwater pearl is a biomineral, that is to say a rock of organic origin. It is made naturally by certain mollusks, in the same way as the mother-of-pearl that lines their shell. Its color depends on the species of the producing mollusc, among others. We use the pearly white one for our confections. The pearl is soft, tender and feminine. Like mother-of-pearl, it provides soothing and well-being; it would have positive effects on decalcification problems. Centuries ago, it was already used to treat dementia and epilepsy, as well as depression. In India it was given multiple benefits, especially against phthisis, ophthalmological problems, hemorrhages ... Hindu medicine still uses it, in powder form, to revive energy, in particular sexual. In the East, it is attributed virtues related to fertility and an aphrodisiac character.