near-black color Human Hair Extensions . Black pearls are often larger than other colored pearls, and most come from Tahitian waters. Many Tahitian pearls can be found in sizes well over 10 millimeters. Black Tahitian Wigs pearls can also come in a variety of shapes, but spherical and symmetrical pearls demand the highest premiums, particularly gems with excellent luster and Hair Weave very few surface blemishes.