What kind of pearl is made from a bead nucleus?

The kind of pearl that is made from a bead nucleus is a cultured pearl. Cultured pearls are created through human intervention, where a bead or small piece of tissue is introduced into an oyster or mollusk to stimulate the production of nacre, the substance that forms the pearl. This process differentiates them from natural pearls, which form spontaneously in the wild without any human involvement.

The method of using a bead nucleus in the cultivation process allows for greater control over the size and shape of the pearls produced, which is one of the reasons cultured pearls are more widely available and can be produced in larger quantities than natural pearls. The bead nucleus itself serves as a foundation around which the mollusk deposits layers of nacre, ultimately creating the pearl.

In contrast, natural pearls form organically without any assistance from humans, while synthetic and artificial pearls are crafts made to imitate the appearance of real pearls but lack the same nacre formation process. Hence, cultured pearls stand out in that they rely on a bead nucleus as a fundamental part of their creation process.