28 is formed by creating a conventional glass-blown sphere and allowing it to cool, then using a blowtorch to create a hot patch on the circumference. A different colour of super-hot glass is dropped into the heated exterior patch and air is pulled out of the piece – creating a vacuum inside the original sphere, to which only the very hot, recently introduced glass can respond in a controlled implosion. The result is a slightly distorted sphere with an interior landscape of satellite shapes, including an opaque milk glass diffuser that houses either a low-voltage xenon or LED lamp.
Standard 28 pendants are made with clear glass exterior spheres and milk white diffusers. Custom 28s can be crafted in near-infinite colour variations.