What defines a cultured pearl?

A cultured pearl is defined as a pearl that is formed as a result of human intervention in the formation process. This typically occurs when a person intentionally introduces a nucleus into an oyster or mollusk, which then reacts by secreting layers of nacre around the nucleus, ultimately forming a pearl. This method allows for the cultivation of pearls in a controlled environment, ensuring certain qualities such as size and shape.

The process distinguishes cultured pearls from natural pearls, which occur without human assistance and are less predictable in terms of their characteristics. The intentional introduction of a nucleus is a pivotal factor in the formation of cultured pearls, highlighting the role of human influence in their production. Cultured pearls can be produced in various types of mollusks and can achieve a range of colors, shapes, and sizes, depending on the specific methods and materials used in cultivation.