ThinkGeek's Fuze necklaces combine the natural beauty of quartz crystal with the geeky beauty of glowing LEDs. The Fuze crystals are hand selected, shaped, and polished and then garnished with an embedded LED that gradually cycles through a range of colors. The glowing crystal is powered by small batteries in the magnetic clasp. The necklace costs $24.99. I've mentally stored this necklace in the "if I ever go to a rave and need something to match my Light Emitting Diode Dress" category, so no, I don't really think it's chic.