Dichroic glass is made with thin layers of metal oxides deposited on glass. This gives an effect of showing two colours simultaneously as some frequencies of light pass through and others are reflected. This effect changes as the piece is rotated or moved so makes beautiful jewellery. The glass has a hole through it for a cord or chain. Supplied with a matching coloured leather cord about 18 inches (45cm) long. About 30mm x 15mm (1.2 x 0.6 inches). Unique pieces - one only.