It is a natural opal ring. The main stone is 7mm*9mm oval white opal. The basic metal is sterling silver and plated with rhodium. To change the metal to a solid gold (white/rose) or platinum is also available, please ask for a quotation if you want. You can also go to my shop Home for more elegant rings: https://www.etsy.com/shop/godjewelry?ref=hdr_shop_menu Opal is the birthstone of October, it will be a great gift for your lover! Customization is always welcome and please feel free to contact White Gold Opal Ring With Gemstone In Oval Shape, Fine Jewelry Oval Opal Ring With Polished Finish, Oval Opal Ring With Polished Finish In Fine Jewelry, White Gold Oval Opal Gemstone Ring, Oval Opal Ring With Polished Finish, White Gold Oval Opal Ring, Elegant Ethiopian Opal Ring With Oval Cabochon, Opal Birthstone Ring With Oval Cabochon For Anniversary, Opal Birthstone Ring Oval Cabochon For Anniversary