Greubel Forsey Tourbillon 24 Secondes Diamond Contemporain in White Gold and Diamonds

Introduced in 2014, this sparkling edition of Greubel Forsey Tourbillon 24 Secondes Contemporain timepiece opens the door to the maritime universe where our gaze drifts between the blued titanium ocean and the cloud layer of sparkling diamonds, illuminated by the circumlocutions of a Tourbillon 24 Secondes.

This timepiece is powered by the Tourbillon 24 Secondes inclined at 25°. Such an elaborate diamond- set movement is worthy of an equally splendid backdrop. Here, a white gold case is also set with diamonds on the bezel, also featuring baguette diamond set lugs. The setting continues right up to the clasp, a volume of 9.71 carats in total. The original version of this timepiece was more contemporary: Its royal blue colour highlighted the Tourbillon 24 Secondes inclined at 25°. Here, the presence of invisible- set diamonds transforms this piece into a watchmaking sculpture.

Technical details
Model: Tourbillon 24 Secondes Contemporain
In white gold and baguette diamonds
Mechanical hand-wound movement with patented tourbillon Calibre GF01c
Tourbillon 24 Secondes • power-reserve indicator • hour and minute display • small second display • 24-second tourbillon rotation indicator

Movement
Diameter: 36.40 mm
Thickness: 10.85 mm

Number of parts
• Complete movement: 362 parts
• Tourbillon cage: 88 parts
• Weight of the cage: 0.38 g
Number of jewels: 40; Olived-domed jewels in gold chatons

Power reserve: 72 hours
Barrels:  Two coaxial series-coupled fast rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
Balance wheel: Free sprung variable-inertia balance with gold mean-time screws (10 mm diameter)
Frequency: 21’600 vibrations/hour
Balance spring: Phillips terminal curve; Geneva-style stud
Lower plate: Titanium, frosted and spotted, royal blue oxidized treatment
Upper plate: In white gold set with 78 baguette diamonds

Bridges
• Nickel silver, frosted and spotted with polished bevelling and countersinks, straight-grained flanks, nickel-palladium treatment
• 1 gold plate engraved with the individual number
• Synthetic sapphire crystal tourbillon bridge

Tourbillon cage
• Inclined at a 25° angle, 24-second rotation
• Cage pillars in Avional
• Titanium cage bridges
• Gold counterweight

Gearing
• Involute circle profile
• Tangential inclined gear with profiled teeth, on fixed wheel and escape wheel pinion

Displays
Hour and minute
Small second
72-hour power reserve on a sector
24-second tourbillon rotation indicator

Case
White gold with convex synthetic sapphire crystal
Diameter: 44.50 mm
Thickness: 15.20 mm
Transparent back with synthetic sapphire crystal
Three-dimensional, variable geometry-shaped lugs, screwed fixing, set with 80 baguette diamonds
Raised polished engraving “Tourbillon 24 Secondes Incliné” on a hand-punched background
Gold security screws
Two white gold plates, engraved, hand-finished with texts, screwed to the caseband
Bezel set with 60 baguette diamonds
Water-resistant: 3 atm – 30 m – 100 ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown: In white gold with engraved and black lacquered GF logo

Dial
Synthetic sapphire crystal hour-ring
Small second dial and power-reserve sector in gold

Hands
Hour and minute in polished gold, with Super-LumiNova
Small seconds (red triangle)
Power-reserve in polished gold
24-second double-tipped hand, black anodised aluminium

Strap and clasp
Hand-sewn dark blue alligator
White gold folding clasp set with 54 baguette diamonds, hand-engraved with the Greubel Forsey logo

Diamonds and carats
272 baguettes / 9.71 ct total (Clarity IF / Color D-E)
• Bezel: 60 baguettes / 2.71 ct
• Lugs: 80 baguettes / 2.74 ct
• Buckle: 54 baguettes / 0.75 ct
• Plate: 78 baguettes / 3.51 ct

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