This elegant ring is crafted in .925 sterling silver and 18-karat gold, featuring a luminous opal center for a sophisticated Balinese-inspired look. Opal = approximately 0.80 ct. tw. Accompanied by pouch and polish cloth Material: 18-karat gold and .925 sterling silver Imported Beautiful Balinese jewelry creations. Ring can be re-sized by any professional jeweler; however, if re-sized, it will not be accepted for return 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.