Here is a necklace that I made when I was designing special wedding necklaces for my niece last year. The rhinestones are hard to capture but it's a beautiful vintage 1950s clasp that I turned into a pendant... added sterling silver and rhinestone rondelles.
9 inches of chain off each side of the pendant, which is just an inch long. I added a 1-1/2 inch sterling silver chain for an extension so this is a max of just under 20 inches. I love the juxtaposition of the delicate chain with the sparkly, rhinestone stations.

Just gorgeous, really! And one-of-a-kind.