Jacob & Co Brilliant Skeleton Northern Lights

About this reference

The Jacob & Co. Brilliant Skeleton Northern Lights (Reference BS431.40.RD.QR.A) was introduced around 2014 as a limited production model within the brand’s high-jewelry skeleton collection. Collectors target this reference for its 44mm 18k rose gold case set with 251 round diamonds and its open-worked JCAM01 caliber, which features a 46-hour power reserve. A defining technical characteristic is the use of a red mineral crystal dial that provides a translucent view of the hand-finished movement architecture. Production was limited to 101 pieces globally, making it a rare find on the secondary market where it typically commands prices between $35,000 and $55,000 depending on condition. While the rose gold and red crystal version is the primary reference, a notable variant exists in stainless steel with a blue mineral crystal, which often appears at lower price points in the secondary luxury market.