Yours for $1.7 million…

Richard Mille RM 56 Felipe Massa SAPPHIRE with manual-wind tourbillon movement — completely encased in sapphire crystal. Side note:  Unless I am overlooking a precedent, I think big credit is due to Maximillian Busser @MB&F who I think was the first to do a 100% sapphire case on a watch (the HM-2 SV).  This seems to have spawned big advances on machining/sculpting capability for sapphire crystal because this Mille piece must be an absolutely crazy nightmare to produce, let alone handle!  Mille says it takes 1,000 hours to machine the case — another 430 hours to grind and 350 to finally finish!!!

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