About the brand: Beautiful Balinese jewelry creations. .925 sterling silver Blue Topaz gemstones = approximately 0.75 ct. tw. 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. Comes with one year unlimited warranty, and pouch and polishing cloth Ring cannot b resized