This beautiful strands of Japanese Akoya Cultured Pearls measures 16 inches in length. Although not the natural color, these pearls are very high luster, all round with a very clean surface. Natural colored pearls that are black color usually are cultured at sizes starting with 8 millimeters. If you are looking for a natural color black cultured pearl necklace, you are looking for black south sea. These black south sea necklaces are known to be expensive. As you can see from the photograph above, this necklace includes an 18K white gold "figure 8" clasp as its fastener. The pearls on this necklace are stranded with silk thread with a knot placed between each pearl.