The black pearls in our Tahitian pearl necklace are rarer than other types of pearls, since only a small number of oysters survive to produce a fine pearl. Since each Tahitian pearl is very unique and does not resemble any other, it takes hundreds of them to find the matching ones required to make a single strand of a Tahitian pearl necklace. So if you're looking for unique pearl jewelry with exceptional value, a Tahitian pearl necklace may be what you're looking for.