Tahitian pearls are more easily noticeable as a result of their darker colors and metallic shine. Some of the pearls also display a highly desired prismatic or rainbow effect called orient. Next, the overtone is the subtle color the pearl reflects.
Deep and dark lustrous black is the most recognizable of the Tahitian pearls. Freshwater and Akoya cousins do undergo dye treatments to imitate this natural color.
Most of the Tahitian cultured pearls will fall into the range of gray - from dark grays that are almost black to lighter ones that are almost silver.
Aubergine is the French word for eggplant. This color designation is used to describe pearls with a purple shine.
Pistachio describe pearls with lighter yellowish - green shine.
Peacock is one of the most valued colors. It is dark green to blue gray with a shine reminiscent of a peacock's tail feathers.
A lighter gray or silver Tahitian pearl is less dark than the traditional black. The color is lighter and can allow for a brighter shine.