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Breast milk jewelry or Breast milk jewellery (Commonwealth English) is jewellery made from pumped or expressed mother's breast milk as a keepsake often worn by the mother. Breast milk keepsakes come in various jewelry types such as rings, lockets, pendants and popular European style beads. Some pendants may be bezel set, locket set, made from only resin, or filled. Filled styles use a preserved breast milk and resin mix to fill holes or openings in jewelry pieces, usually Sterling Silver. Generally, the filled shapes are trees, leaves, or hearts representing love and life.