This sand is going to be eye-catching! In reality, this is not sand, but magnetic iron filings. Once turned over the hourglass will work the same way as a basic hourglass. Except that the magnetization of the wires will produce fantastic sculptures. A reinvention of the traditional hourglass made for science, while keeping its decorative side. This hourglass is secured with a magnet installed in the wooden base, for the clumsier ones. Features: Finish: Wood, glass, iron powder, magnet Style: Postmodernism Dimensions: Length 15cm, Width 8cm Optical Illusions, Postmodernism, Products, Sculptures, Klein Bottle, How To Make Light, Science, Science Decor, Surface Design