Everybody knows about buying engagement rings to cement loving bonds, but have you heard about the band that signals a split? The Break-Up Ring is now available from Werner Häring, a designer in Pforzheim, Germany. Made of platinum, the ring’s surface features a broken heart—with a deep fault winding down the middle of the two halves—and a small round brilliant diamond set near the top of the fissure. The artist bills the piece as a present for retaining friendship, a thank-you for a partner’s understanding, or even an incentive to try again. Werner Häring, Pforzheim; (49-7231) 21108; www.wernerhaering.de.