Anyone can give diamond earrings for Valentine's Day. But what about diamond earphones? Norwegian jeweler Thomas Heyerdahl has created the iDiamond Ear, hewn from 18-karat white and rose gold and encrusted with 206 brilliant cut diamonds—about 1.65 carats' worth. One thousand numbered pairs are being manufactured and sold for $6,400 apiece. Too bad a matching iPod is not included (heyerdahl.no).