14-karat Gold Plated Gemstone(s): Lab-Created Ruby = approximately 10.30 ct. tw. The Ring Size Guide(https://s3.amazonaws.com/more-info/guides/ring-size) Ring cannot be re-sized 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. Stone Size (mm) - Lab-Created Ruby-10x14, Lab-Created Ruby-3x4; Metal Wt (Gms) - 3.44 Colour: red