Richard Mille RM 52-01 Black Ceramic Ruby Skull
Case
Tripartite tonneau
Size
42.70 × 50.00 × 15.95 mm

Overview

A ruby-set skull with red gold detailing

The skull here is set with rubies across the cranium, the red stones reading against the black ceramic case and the openworked structure behind them. The crown is red gold and the strap black rubber.

The calibre RM052 is unchanged: the skull is the baseplate and bridges, the jaws hold the ruby of the tourbillon cage, and the back of the skull serves as the centre bridge.

Key details

Case materialBlack ceramic
SkullRuby set
Power reserveCirca 48 hours (± 10%)

Design and engineering

  • Ruby-set skullStones set across the cranium of a skull that is itself load-bearing.
  • Skeletonised structureThe baseplate and bridges were subjected to rigorous testing to confirm their strength after being cut to shape.
  • Fast-rotating single barrelDelivering more constant torque across the power reserve than a conventional barrel.
  • Interior flangesUpper flange in carbon, lower flange in grade 5 titanium with a DLC coating.
  • TZP ceramic caseLow density, highly scratch resistant, microblasted with hand-polished corners.
  • Sapphire casebackThe reverse of the skull is legible from behind.

The reference

Technical specifications

RM 52-01 Black Ceramic Ruby Skull
ReferenceRM 52-01
CalibreRM052, manual winding tourbillon
FunctionsHours, minutes; tourbillon
Power reserveCirca 48 hours (± 10%)
Jewels19
Frequency21,600 vph (3 Hz)
Balance wheel diameter9.12 mm
BarrelFast rotating, single
Baseplate and bridgesGrade 5 titanium, in the form of a skull
SkullRuby set
CaseTripartite tonneau
Case dimensions42.70 × 50.00 × 15.95 mm
Case materialBlack ceramic
Interior flangesUpper flange in carbon, lower flange in grade 5 titanium with DLC coating
CrystalsSapphire (1,800 Vickers), anti-glare both sides; bezel side 1.50 mm; caseback 1.20 mm centre, 2.04 mm edge
StrapBlack rubber

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RM 52-01 Black Ceramic Ruby Skull · Ref. RM 52-01 Black Ceramic Ruby Skull

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