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. Sterling silver is used to make the attachment pieces for the pendants and all are supplied on 16 inch sterling silver chains. About 40mm x 12mm (1.6 x 0.5 inches). Unique pieces - one only.