This elegant sterling silver necklace features faceted round-cut diamonds and blue topaz totaling 1.63 ct. tw. Faceted Round-cut Prong-set Diamond = approximately 0.03 ct. tw.; colour = H-I; clarity = SI3-I1 Faceted Blue Topaz = approximately 1.60 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 5/8in 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