Hayden Peters is a jewellery historian and worldwide authority on mourning and sentimental jewellery, based in Melbourne. His interest in the subject began 15 years ago when he saw a ring with 'in memory of' engraved on the top and thought it a wonderful symbol of affection. This led to him to collecting other pieces, including necklaces, rings, and bracelets. The period spanned is from 1550 up to 1920. He found this area of collecting a fascinating study in the cultural, social and art history of these times.