This elegant sterling silver necklace features faceted round-cut diamonds and blue topaz gemstones totaling 3.40 ct. tw. Faceted round-cut prong-set diamond = approximately 0.03 ct. tw. Blue topaz = approximately 3.37 ct. tw. Lobster claw clasp closure Material: .925 sterling silver Care Instructions: It is customary to treat most gemstones to achieve enhanced colour and durability. Some of these treatments may not be permanent, and may require special care. Imported Pendant drops approximately 3/8in 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. Colour: blue