Airport duty-free shop. Luxury goods often have to pay taxes when they pass through customs in various countries, while goods bought in duty-free shops do not need to pay taxes. Cartier rings in duty-free shops are cheaper than those in other places because taxes are omitted. Cartier jewelry, Cartier rings, bracelets, necklaces, earrings, various styles, leading the trend, beyond the times, favored by the royal families of various countries, really the emperor's jeweler.