The Bluetooth has become such a fashion accessory that there is even a limited edition gold finish Dolce Gabbana version of the Motorola H700 with the letters "DG" printed on it. It works exactly like the standard version but has the god finish and lettering. I won't be surprised to see limited edition diamond encrusted Bluetooths in the near future.
Swiss company GoldVish has produced and sold a diamond studded cell phone for 1.2 million.
For that price, I guess you would not mind that billing gimmick...