We suggest silver dip or a silver cloth for cleaning our work. Use a cotton bud in silver dip for recesses & an old soft toothbrush for matt & rough textured areas. A small abrasive pad (Scotchbrite) can also be used on dry surfaces for a matt finish.
Alternatively try the following method.
Line a glass vessel with aluminium foil, add 1tsp of bicarb of soda and1tsp of salt,add 1/2 ltr of boiling water. Place jewellery in solution for 30 mins making sure that the silver is in contact with the foil. Remove, rinse and dry.