Rado Watch DiaMaster Ceramos Thinline Automatic R14068306. Simplicity is the key to brilliance. With the DiaMaster Ceramos collection, Rado has found the key and brilliance is present in every sense of the word: bright, ingenious and impressive. Rado has used its innovative wonder material, CeramosTM, a mix of 90percent high tech ceramic and 10percent metal alloy, features a colourful sheen that is a part of the material and will never fade or lose its shine.