About the brand: Exceptional sparkle, luxurious designs. .925 sterling silver Faceted Round-cut Prong-set Diamond = approximately 0.01 ct. tw.; color = I-J; clarity = SI3-I1 Blue Topaz gemstones = approximately 4.53 ct. tw. Pendant drops approximately 1in Approximately 16in long with 2in extender 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.