A playful idea is the starting point for the 18 carat gold ring IN & OUT: due to a screwing mecanism different coloured precious stones can be screwed respectively into the basis ring. Depending on the mood the jewellery wearer choses the colour of the precious stone and can screw it into the ring. The basis ring and the screw-elements with the setted precious stones fit perfectly together and are hold together savely by the exact screw mecanism. This ring is characterized by the functionality of the design as well as the specially innovative and playful concept.