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- metal fragments of jewellery alloys with all levels of purity Ag 925, Ag 937, Ag 900, Au 333, Au 375, Au 585, Au 750
- sheet metal cuttings, rings, earrings, bracelets, chainlets, trees from casting, grit, residues of Au and Ag solders
- rubbing dust from manual grinding and polishing on disc
- sludges and rubbing dust from mass machine grinding and polishing
- ultrasound cleaning baths
- used ball burnishing solutions
- re-gilding baths, bleaching baths for Ag
- sweepings from workshops, used emery papers
- filters from ventilation
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