You must submit a portfolio as part of your application. Your portfolio should contain:

sketchbook work demonstrating personal ideas, design research and observed drawing
photographs of three dimensional models, ideas prototypes and test pieces in a range of materials
well-photographed examples of completed personal studio work, clearly captioned with titles, dates, dimensions in millimetres, and materials the work was made from (if the work was made from your design by another person or company, this should be clearly stated)
evidence of a critical and reflective awareness of contemporary work in jewellery and silversmithing and wider disciplines.