What does the term full-drilled refer to in cultured pearls?

The term full-drilled in relation to cultured pearls specifically refers to a pearl that has a hole drilled completely through its center. This drilling allows the pearl to be easily strung on a necklace or used in other types of jewelry. The complete drilling is essential for providing a secure fit in various settings, ensuring that the pearl can hang properly and be beautifully showcased in designs.

Full drilling is a common practice in pearl jewelry making, as it increases the options for how the pearls can be strung and displayed. These pearls are often preferred by jewelers because they accommodate traditional threading methods without compromising the structural integrity of the pearl itself.

Other terms, like decorative outer layer, natural surface finish, or multiple small holes, do not accurately describe the technical aspect of drilling in pearls and are therefore not applicable to the specific definition of full-drilled.