If you were determined to buy your sweetheart the ne plus ultra of Valentine’s Day gifts, the 201 Carat Chopard watch was a worthy contender.

The primary stones are, of course, heart shaped: one pink weighing 15 carats, a 12 carat blue stone and one 11 carat colourless stone. These three large diamonds cover the yellow diamond encrusted face. A spring mechanism allows them to open up so that the face can be seen. The band is encrusted with white and yellow diamonds totalling 163 carats, making up the rest of the carat weight.

The cost? $25 million, its selling price in 2000. It is considered to be the world’s most expensive watch.