This is an authentic, pre-loved Mauboussin piece. It's possible that there may be some gentle wear. 18-karat rose gold Faceted Round-cut Prong-set Diamond = approximately 0.30 ct. tw.; color = F-G; clarity = VS1 Approximately 20in long Lobster claw clasp closure 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. Accompanied by packaging