Understanding the particular maintenance needs for each type of gemstone is essential while cleaning them. Since many gemstones have undergone treatment, they may be harmed by aggressive cleaning agents. Use a toothbrush or other soft-bristled brush, warm water, and a few drops of mild dish soap. Steer clear of hot water, steam, and ultrasonic cleaning since these might compromise the structure of the gemstone, particularly for delicate stones like emeralds. Because malachite is heat-sensitive, use cool water. Before cleaning, if in doubt, speak with a jeweler to make sure you don’t accidentally damage your priceless jewels.