Hi,
For almost all sterling silver jewelry, if they don't tarnish so bad (like.. dark/beyond recovery - you may have to consider using liquid silver cleaner in that case) you can use silver polishing cloth as Sarah (above) mentioned or travel jewelry care wipes like ours: http://www.beadbyus.com/jecawi.html
Just gently polish your sterling silver jewelry, beads, findings with this wipes, your jewelry will be back clean, shiny & sparkling again.
Hope this helps.