 Rado design and material innovations continued apace into the 1970s and 80s.The first gold-coloured DiaStar debuted in 1972, and 1976 marked the introduction of the minimalistic Rado Dia 67, which featured innovative case construction entirely covered by an edge-to-edge metalised sapphire crystal.In 1986 the Rado Integral exploded onto the scene, revolutionizing the watch industry with its use of scratch-resistant high-tech ceramic in the bracelet.