LULU Copenhagen Colour Ring Enamel - Green Our simple enamel rings rings are made to colour up your look all year. Make your own personal mix or wear them individually. Kindly note that the enamel rings are handmade. Therefore, you may find small irregularities on the surface. This is the beauty of handmade jewellery. Thickness: 2,5-3mm Materials: brass, enamel Jewellery from LULU Copenhagen is always nickel-free. Please notice, that our enamel colours are mixed by hand, which can create a slightly variation in the individual production. At the same time, the screen resolution and colour settings on digital devices can cause the colours in the pictures to appear different from the actual colours used.