Made of 18K gold, platinum, platinum and other materials. Cartier is a world-famous jewelry brand. Most of Cartier's ring styles are 18K gold, some are platinum or platinum, and some high-end rings are inlaid with some natural gems or diamonds, which are elegant and luxurious. Cartier, a famous French jewelry and watch manufacturer, was founded by Louis-FrancoisCartier in Ruemontogueil3 1847 in Paris. Cartier is considered as one of the most famous jewelry manufacturers in the world. Cartier has a long history of providing jewelry to the royal families of various countries, and it became famous in the19th century. It was called Cartier at that time.