Tarnishing of sterling silver is a natural process caused by oxidation and can be easily removed by using a sterling silver polishing cloth. We highly recommend the Connoisseurs Disposable Jewelry Wipes available at Wal-Mart. Do not expose piece to harsh chemicals such as pool chlorine or bromine from hot tubs. In addition, do not expose to bleach. These chemicals will destroy the silver. Do not clean with the “dip style” as this will strip the handmade silver Bali beads of the nice “oxidized” look. As with any piece of fine beaded jewelry, occasional restringing is suggested. The cost for restringing is $8 for the first strand and $5 for each strand thereafter. Enjoy your jewelry, and don’t hesitate to call us if is you encounter any problems