Product designer Rosy Napper, a ceramic specialist and a graduate of the Central Saint Martins art school in London, created a series of luminaires made from waste coal ash and discarded ceramic. She says that the recycled material has a unique translucent quality.

Napper has created the ReCinder range using the medium, which she believes is one of the few 100 per cent recycled ceramic materials available which is capable of a translucency to rival porcelain. The latter is increasingly seen as unsustainable. 

The material can filter blue light, while letting all other colours of light pass through. The light source is Ledvance LED battens. Napper believes the material has applications in luminaires for domestic lighting applications.