Cartier HPI00487. By inquiring Cartier official website, we know that the seven diamonds in Cartier watch dial are Cartier HPI00487. Cartier (English: Société Cartier) is a famous French jewelry and watch manufacturer. Founded by Louis Fran? ois Cartier on 1847 in Paris No.31,it is regarded as one of the most famous jewelry manufacturers in the world. Cartier, the only official online boutique in China, inherits the excellent quality for a hundred years, and keeps writing the design history of world jewellery and watches, which is timeless and dazzling.