The oldest example of chains and necklaces are found in ancient Babylonia, more specifically the biblical city of Ur about 2500 B.C. Chains represent the connection in humanity; in other words "The eternity of the circle linked without beginning or end".
The fashion statement chains project to our style has persisted through history: wealth and stability. Being one of the oldest items in the history of jewelry, chain design has not changed significantly; the concept remains the same. The big difference is today is not necessary to be part of royalty to acquire a luxurious chain.