True Dichro TD glass is a scientific breakthrough for the art glass scene. The glass is called dichroic because it changes in both colour and opacity depending on the ambient light. The glass appears opaque and soft in reflected light and comes alive in vibrant shades of pink, purple, blue and yellow in natural daylight and varying levels of transmitted light. Youghiogheny True Dichro is non-coated and non-fusible. Each sheet of glass is a work of art in itself - so variations within and between sheets should be expected.