This is an authentic, pre-loved Chopard piece. It's possible that there may be some gentle wear. 18-karat white gold round-cut prong-set Diamond = approximately 1.34 ct. tw. Approximately 6 1/4in long It is customary to treat most gemstones to achieve enhanced color and durability. Some of these treatments may not be permanent, and may require special care. Please note: In product titles ct. tw. refers to the total carat weight of all diamonds and/or gemstones combined.