Cartier Secret Watch with Phoenix Décor – $2,755,000. The watch itself is already made out of 18-carat white gold plated with rhodium. It also features a 3.53-carat portrait-cut diamond. To top it off, it is covered with 3,010 brilliant-cut diamonds.
Patek Philippe 1953 Model 2523 Heures Universelles Watch – $2,899,373. Sold at an auction in 2006, this watch is made of 18k yellow gold. It features a polychrome and enamel dial that resembles the North American continent.