If you take your vows while slipping this on her finger, don’t expect to have to keep your promise for too long. The Killer Ring might not do enough damage to finish you off, but could be a problem during one of those post-newlywed-the-honeymoon-is-definitely-over fights. Designed in 2004 by the late Tobias Wong and Philipp Mohr. Decked out in your choice of sterling silver, 14KT and 18 Kt gold and platinum, it boasts a Tiffany’s style setting and a three point artificial diamond.