This elegant ring features an oval-cut emerald set in 14-karat white gold with a total weight of approximately 0.45 ct. tw. Faceted oval-cut prong-set emerald = approximately 0.45 ct. tw. Material: 14-karat white gold Care Instructions: 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. Imported Ring can be re-sized by any professional jeweler; however, if re-sized, it will not be accepted for return. Please note: In product titles ct. tw. refers to the total carat weight of all diamonds and/or gemstones combined.