This is an Estate 18K yellow gold Swan Mabe pearl and diamond ring. This a 15mm Mabe pearl set in the center and there are 51 round brilliant diamonds for a carat total weight .50ctw, color G-I and clarity I1. It has an emerald green eye. Mabé pearls are half-pearls that are cultivated on the inside of a mollusk's shell. A small nucleus, usually made out of mother of pearl, is attached to the shell of the mollusk and left to accumulate nacre over a period that usually runs about two or three years. Swans usually stand for symbols of grace and beauty. Aphrodite, the goddess of love, found swans sacred. Wear this ring with all it's grace and beauty and it will be the center of conversation!