Rado Watch HyperChrome Diamonds Black Ceramic. The Rado Watch HyperChrome Diamonds collection is scratch resistant, light, hypoallergenic and incredibly comfortable to wear. Who said you have to suffer to be beautiful? For a shine that never fades. Eye catching plasma high tech ceramic begins its life white. The plasma carburising process, first used by Rado, consists in loading finished white ceramic pieces into an oven, where the ceramic heats up to a temperature of 900 C and gasses activate at 20,000 C, changing the molecular structure of the pieces and producing a cool grey metallic colour. Remarkably, this colour is achieved without the use of any metal, and will not fade over time. Every woman deserves to shine and the Rado Watch HyperChrome Diamonds collection proves again that diamonds really are a girl\'s best friend.