Three types.

These three kinds of steel seals are engraved on the inside of the Cartier ring, and different steel seals represent different meanings. The first steel seal Cartier is actually the LOGO of the Cartier brand, and the other steel seals represent the size and number of the ring in turn.

Louis-Francois Cartier registered the Cartier company with a diamond-shaped logo composed of the initials L and C of his name surrounded by a heart. This heart-shaped logo symbolizes a legendary love story and The beginning of the kingdom of luxury. The brand uses the English letters of the founder's name as its logo, which is simple and elegant. In July 2020, Forbes 2020 Global Top 100 Most Valuable Brands was released, and Cartier ranked 56th. As of August 2021, the official website shows that Cartier's products include watches, leather goods, jewelry, accessories, household items and gifts.