REAL sea urchin ring. Each sea urchin ring is made from a real urchin shell, not a casting. These rings are either copper with a copper band, or all silver (pure sterling band with fine silver urchin), with the exception of urchin 'E' which is copper with a sterling band. Most of these can easily be sized up by stretching the band up to one whole size. For example, a size 8 can become a size 8.5 or size 9.
