Which type of cultured pearls are almost always bleached?

The correct response highlights that Akoya pearls are almost always subjected to bleaching processes. This practice is common because Akoya pearls, which originate primarily from Japan and China, often have a natural color that can be somewhat dull or grayish. Bleaching them enhances their luster and brightness, making them more appealing in the market.

Additionally, the bleaching process allows for a more uniform color, which is highly desirable among consumers seeking the classic white or cream shades associated with Akoya pearls. Other types of cultured pearls, such as South Sea, Keshi, and Baroque pearls, typically do not undergo bleaching to the same extent, as they usually exhibit natural colors that are already vibrant or unique. Thus, the coloration process for these pearls may focus more on enhancing or preserving their inherent qualities rather than altering them through bleaching.