AESTHETIC 925 STERLING SILVER SOUTH SEA SHELL PEARLS NECKLACE LENGTH 18 INCHWEIGHT 86.4 gSouth Sea pearls are generally considered the most valuable and prized cultured pearls in the world. Their large size, exceptional luster, and naturally occurring colors contribute to their high value. A single South Sea pearl can cost thousands of dollars, and a necklace can reach prices well into the hundreds of thousands.