It is a work of astonishing sensibility that traversed high jewellery and watchmaking barriers in a way no secret watch has.  At its core, Cartier has constructed a best-case scenario straight out of a fantasy where mechanical magic and gemological prestige converge potently to inspire nothing but burning envy and lust.


The Tourbillon Mystérieux Azuré pendant is as achingly beautiful as it is mechanically so. It employs the Cartier hand-wound caliber 9463 MC, a double mystery tourbillon movement like that in the Rotonde de Cartier Double Mystery Tourbillon where it appears to be suspended without support.


But in this instance, however, the arresting movement shares center stage with the glamourous, stylised façade of a night butterfly ornately set with diamonds of varying cuts, one gob-stopping 25.93-carat oval-shaped Ceylon sapphire from Sri Lanka, more sapphires and onyx along the tips of its wings.  This is a transformable piece which can be worn as a medallion where the big solitaire sapphire can be detached from the rest of its diamond-spattered body. The fully decorated innards of its movement are made visible through its sapphire rear back.

This magnificent showpiece demanded an eye-watering 2,050 hours of labour, the equivalent of 17 months of intense collaboration between the watchmakers and jewellers of Cartier.  It is a piece-unique and to wit, one of unparalleled allure.