Their magic world has always fascinated Jaquet Droz. Of the stones used by the Manufacture’s expert dial-makers, onyx is particularly admired. Alluring and mysterious, it presents the shade of darkest night: the color of all our dreams, of all infinities. This poetic illusion is magically captured by Jaquet Droz in the Grand Heure Minute Onyx which, for the first time, confronts the dark mystery of onyx with the bright gleam of steel.