From the brilliant minds of Robert Greubel and Stephen Forsey comes the new Tourbillon 24 Seconds Contemporain Diamonds. For this watch, Greubel Forsey have used a process known as Bienfacture– the art of supreme finishing which transforms rough parts into brilliant jewelry.

This unique timepiece took Greubel Forsey on a journey for bienfacture. They worked with monarchs of the world of precious gemstones to find the finest quality (clarity IF, colour D-E) baguette cut diamonds to enhance the architecture of the watch. These diamonds bring attention to the 24-second tourbillon because the refraction of a perfectly cut diamond directs its play of light.


Because watchmaking standards are higher for precision than the jewelry cut for gemstones, the diamonds set in their timepieces are calibrated within a micron and adjusted like the mechanisms of a timepiece.

The 43.5mm by 16mm in white gold case is also set with baguette diamonds around the bezel and in the lugs. To emphasize the sculptural lines, the stones become part of case structure. The timepiece is set with 272 diamonds totalling 9.71 carats.

For this particular model, Greubel Forsey chose the 24-second tourbillon to be inclined at 25° with a beat of 21,600v/h. The two superimposed, rapid-rotation barrels, have protection against excess tension and deliver a power reserve of 72 hours. They leave space for a large fee-sprung balance and a larger tourbillon cage. The inclined carriage brings the height of the movement to 10.9mm on a diameter of 36.4mm, for 267 components and 40 jewels.