When it comes to thin watches, Piaget is king. With a reputation as the watchmaker of lean horological machines, Piaget is also renowned for its high jewellery watches. Marry an ultra-thin case to diamonds and the result is this absolutely dazzling Altiplano model, the world’s thinnest high jewellery watch. Measuring just 5.60mm in height, the 38mm white gold case frames an openworked movement that sparkles with the light of white diamonds. The entire watch is set with a flurry of baguette and brilliant-cut diamonds with freshly fallen snow-set diamonds decorating the mechanical hand-wound movement. Equipped with ultra-thin Piaget calibre 900D, which is only 3.65mm thick, this record-breaking watch is presented on a black alligator strap.