Richard Mille RM 19 : CALIBRE RM019 – Manual winding tourbillon movement with hours, minutes and power-reserve indicator.
After using carbon nanofibre as a technical solution in several landmark 21st century timepieces, Richard Mille decided to explore a more ethereal, emotional and feminine approach for its ladies’ collection by using a perfect piece of black onyx as the baseplate for the tourbillon movement of the RM 019 in a first for the brand.One of the early challenges faced by the R&D team in creating this timepiece was to source flawless natural black onyx stones that were large enough to support an entire watch movement. This was a difficult task because naturally occurring onyx almost always has small encapsulations of geological debris or fault lines where breakages could occur. Another issue was working with the material itself: drilling and cutting into semi-precious stones is actually an art form that requires great expertise, special cutters and tolerances similar to those required for the production of metal or carbon-based components.
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