When cleaning 14kt or 18kt Vermeil use lukewarm water and a mild liquid soap.  Avoid harsh chemicals and detergents when cleaning your Gemstone gold vermeil Jewelry. Dip a clean clothing the bowl with water and soap and gently rub your vermeil jewelry piece. Wedo not recommend using a brush as you may end up rubbing off the layer of gold, leaving the silver underneath visible. Let it dry.  With Sterling Silver any silver polishing cloth will work, again avoid harsh detergents on your gem stones.  Also when not wearing your Fego Gioielli collection you can prevent tarnish on both Sterling Silver and Vermeil by avoiding air exposure by storing in plastic. Any Questions please contact info@fegogioielli.com