This is a gorgeous CORO piece. The book chain necklace measures from claps to pendant drop is 7 and 3/4 inches. Some of the stones have been replaced. But there are no places on the necklace where there is not a stone in place. Some may not be original. This is a beautiful piece that is clearly marked Coro. Clasp is present and is tight. Overall length of the necklace from clasp to clasp is 15 and 3/4 inches. please look at photos carefully.