This Firejewel Crystal Cube Swarovski Necklace is in good condition.* It's a solitaire necklace with a single AB-coated* 10 mm Swarovski crystal as its focal point. Inside that crystal is a tiny LED. The 17" neckwire which creates that hip, floating "illusion" look is also functional. It carries the current from the clasp, inside which is housed three easy-to-replace, LR41/AG3 batteries. When you close the clasp, it creates a circuit and voila. To cut off the current, just disconnect or reverse the clasp. You glow. Each necklace comes in a small gift box. *Uses Three LR41/AG3 batteries. Necklace has never been worn and batteries have since died, never tested new ones. To replace batteries: Remove barrel clasp top. Remove used batteries and replace with three non-rechargeable LR41/AG3 batteries. Be sure to stack all the batteries in the same direction, close the barrel clasp, and plug the magnetic ends into the clasp.