The best cleaning method to use is a visit to your local jeweler or jewelry store for a professional cleaning and inspection. However, if you are between visits and would like to clean it at home, a long soak in Windex is a great method.
Andrews Jewelers suggests that you store all diamonds and diamond jewelry in soft pouches to prevent the jewelry items from rubbing or scratching against one another. Constant rubbing can cause abnormal wear of the platinum, white gold, or yellow gold. If the diamonds are rubbing against one another it can cause the diamonds to dull or lose their brilliance. For security purposes we recommend that you invest in a small home safe. When not at home you can store your jewelry there protecting it against would be thieves. In addition, we recommend that you attain some form of jewelry insurance to protect you against, stone loss, damage, or theft. For more information, see Jewelry Insurance.