Nacre pearl beads from Czech brand Preciosa are a superb imitation of the beauty and luster of natural or cultivated pearls. They are produced by depositing several layers of nacre onto a lead free crystal base. These quality pearl beads are highly resistant to abrasion, UV radiation and alcohol-based perfumes.

What is nacre? Nacre is a pearly fluid found inside pearl-producing mollusks, like oysters and mussels, that is deposited onto the surface of an irritant (usually a parasite) inside the mollusk shell. Over time, this self-defensive mechanism forms a pearl. Mother of pearl, which lines the shells of pearl-producing mollusks, is actually built-up layers of hardened nacre.