Antoine Preziuso has been forging his own path since 1980—over four decades of independent Geneva watchmaking rooted in complication mastery and a refusal to follow convention. Born in Geneva with Italian roots, he trained at the city's École d'Horlogerie and built minute repeaters, perpetual calendars, and tourbillons under his own name and for some of the industry's most established houses. In 2002, he became the first watchmaker to construct an entire watch from meteorite—case, dial, buckle, and hands. The atelier he runs with his son, Florian, has remained fiercely independent, selling through personal relationships with collectors rather than retail networks.
When the father-and-son team unveiled the Tourbillon of Tourbillons in 2015, the complication had become the preferred canvas for mechanical one-upmanship. What the Preziuso atelier delivered was structurally different: three independent tourbillons rotating every 60 seconds on a single rotating dial plate that rotates every 10 minutes, linked by a planetary triple differential so original that no computer programme could accurately simulate its function. Three international patents followed. So did the Innovation Watch Prize and the Public Prize at the Grand Prix d'Horlogerie de Genève.
A decade later, the celebration arrives not through a mechanical revision but through an extraordinary act of haute joaillerie. The TTR3 Trillion Radiant is a pièce unique and a singular expression of what happens when independent watchmaking ambition meets gem-setting virtuosity at the absolute limit.
Things to Know About the Watch
The numbers tell part of the story: 874 Top Wesselton G+ diamonds totalling approximately 89 carats across the 47 mm 18K white gold case and integrated bracelet. The complete watch package tips the scales at 350 grams—substantial heft that speaks to the sheer density of the precious metals and stones. Both baguette-cut and trillion-cut stones are employed in an invisible setting of exceptional difficulty—the diamonds appear suspended, as if light itself has been given architectural form.
The trillion cut is the defining gesture. Triangular, technically demanding to execute, and rarely employed in high jewellery due to the precision required at each of its three vertices, the trillion here is not decorative filler. It is a philosophical signature.
Three sides echoing three tourbillons, echoing the three-fold nature of time — past, present, future. On the dial, two pure white trillion-cut Top Wesselton G+ diamonds sit between the tourbillon cages, while a pigeon blood red trillion-cut ruby marks the ten-minute orbital rotation of the platform. No other watch in the world carries that particular marker.
The Movement
Inside this brilliance beats the calibre AFP-TTR-3X—the same patented architecture that started everything. A manual-wound movement with a 48-hour power reserve composed of 570 parts, 65 rubies, and six ball bearings, the smallest measuring a scarcely believable 1.6 mm in diameter—the tiniest ever produced for a watch movement.
The mechanical principle is as ambitious as the gem-setting. Three tourbillons are mounted equidistant from the centre of a revolving plate, their respective axes forming an equilateral triangle. Each tourbillon completes one rotation per minute—faster than the plate itself, which completes six rotations per hour, or one every ten minutes. The speed at which the tourbillons rotate is accelerated by this double revolution, and because the three cages turn on different axes at variable speeds, isochronism is meaningfully enhanced. The arrangement gives the timepiece an unmatched regularity that a single tourbillon simply cannot achieve.
Linking the three regulators is the planetary triple differential. Through this device, the tourbillons achieve resonance, naturally synchronising at 21,600 vph to produce a single, stable frequency. It is a triple-tourbillon regulator that doesn't merely display the complication but actively leverages it for chronometric benefit.
On the Wrist & Price
Antoine Preziuso has always operated outside the mainstream. A Geneva-trained independent with Italian roots and a family workshop where father and son built something the major manufactures never attempted. The Trillion Radiant is the culmination of that decade-long story: not a new movement, but the definitive presentation of one that already earned its place in horological history. A watch not for the faint of heart, in terms of price, complication, weight, and gem-setting.
Sticker Price USD 2,000,000. For more info on Antoine Preziuso click here.
