Limited Edition of 99 Pieces. Louis Erard Watch Excellence Le Regulator Metier D\'Art Aventurine Limited Edition 85237AA32.BVA36. The pure design brings these fragments of Earth back up to the 21st century. A collision of time. Strength in contrast. Precise motions. Aesthetic fusion. Cutting stones and glass to meet the finesse of a dial requires expertise in fine watchmaking. The challenge is two fold, since the dial has two levels and the material is cut to reveal the regulator\'s snailed opaline dual counter. The hours are displayed at the top, the seconds at the bottom, and the large signature fir tree minute hand is in the centre. Discreet glossy silver indexes further showcase the technicality of the regulator.