An icon of creativity spanning three decades, De Grisogono, headed by the charming Fawaz Gruosi, made a name with its world-record emeralds, black diamonds, and of course watches. 

This Instrumento Numero Uno is carved out of a solid platinum brick. Limited production of only 75 (numbered) pieces. The watch condenses a huge amount of this precious investment bullion, its classic size offset by its heft, making it at home on large or small wrists. The clean geometric lines of the polished rectangular platinum case with articulated lugs are moderated by the deep teal dial.

Self-winding calibre finished in smoked black, echoing the Swiss brand's trademark sultry colour scheme. Supplied with its original box, setting stylus, booklet and certificate (stamped by the de Grisogono boutique in London), this stylish piece by one of the most desirable contemporary jewellery boutique brands would make a perfect gift, or discreet addition to the collection. Two-year Watch Club warranty.