Cartier signature ring parameters are 750 thousandths of rose gold, set with 3 round brilliant cut diamonds, with a total weight of 0.22 carats, a width of 5.5 mm, and an applicable size of 52. According to relevant public information, Cartier is a French luxury brand, mainly engaged in the manufacture of watches and jewelry, including jewelry, watches, leather goods, perfume and so on. 1847, Louis-Fran? ois Cartier founded Cartier brand in Ruemontogueil 3 1 Paris.