Limited Edition of 18 Pieces. Jacob & Co Watch Brilliant Mystery Baguette White Diamonds Limited Edition BM526.30.BD.BD.A. The Jacob & Co. Brilliant Mystery collection combines brilliance and magic. It unites hundreds of exceptional gems with a dial that mystifies and delights. It revolutionizes the more than 200-year-old tradition of mystery dials, a concept first invented by a watchmaker who was also a magician and illusionist. In this contemporary version of the traditional watch, the minute and hour hands encased in sapphire crystal appear to float in air within a case and dial covered with baguette diamonds. This strikingly beautiful watch is a showcase of Jacob & Co.\'s high jewelry, gem sourcing, gem-setting and watchmaking expertise in a woman\'s timepiece.