Connoisseurs All-Purpose Jewelry Cleaning Kit will revive the brilliance in all your jewelry and this one kit will take care of all your jewelry cleaning needs. Bring back the sparkle and clean gold jewelry, platinum jewelry, diamond jewelry and more. The gentle formula is also an ideal jewelry cleaning solution for semi-precious stones, such as pearls, opal, coral, onyx, turquoise, and costume jewelry. Use the polishing cloth to buff gold and silver jewelry to a high shine. Our exclusive anti-tarnish formula helps prevent future tarnish build-up.