This elegant necklace features round-cut white topaz and diamonds set in .925 sterling silver with a total weight of 1.69 ct. tw. Faceted round-cut prong-set diamond = approximately 0.08 ct. tw. Faceted white topaz = approximately 1.61 ct. tw. Lobster claw clasp closure Material: .925 sterling silver Care Instructions: 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. Imported Pendant drops approximately 1/2in Approximately 16in long with 2in extender Please note: In product titles ct. tw. refers to the total carat weight of all diamonds and/or gemstones combined.