This is a reproduction of a stunning necklace owned by Former First Lady Jacqueline Kennedy. It is rhodium-plated silver metal with a very attractive and unusual pendant that has a floating blue stone in the center. This stone is marquis shaped and surrounded by lots of bright shiny simulated diamonds. The pendant is 1-1/2" long by 1" wide and is signed "JBK" on the back. The chain is 18" long and has a 3" extender chain and a lobster claw clasp.