Swarovski

This portable solar crystal harvests energy during daylight, and when put into a docking station, powers a light installation, taking the sky indoors.

This cyanometer consists of smartly cut glass which refracts light in such a way that it focuses more intensely on the solar cells, increasing its efficiency significantly. It takes its name from the 1789 invention, which was used to measure the colour of the sky.

The stones used for the ring-shaped installation are opals, which scatter the light in the same way that the sky does. The more light the solar crystals receive in the daytime, the more intense light the installation can bring indoors.

The three lights — standing, hanging and wall lights — are part of the Swarovski Chrystal Palace lighting collection.