We’ve seen many a jewelry-cleaning hack circulating around the internet that actual jewelers disavowed as dangerous for your baubles. But, according to many fine jewelry websites, Windex is, in fact, safe to clean certain jewels, including diamonds and other hard gemstones. According to Leaf.tv, “Windex is safe for gold and silver jewelry. It can also be used on diamonds and hard gemstones. However, do not use it on emeralds, coral, opals, pearls, amber or turquoise.” Simply spray on and scrub with an old toothbrush before rinsing with warm, soapy water. Or you can do as The Knot suggests, and mix a solution of 50% Windex and 50% hydrogen peroxide and let it soak for 10-15 minutes.