Warm water, moderate grease-cutting detergent, and a soft brush are the best ways to clean your diamond birthstone at home. To remove any dirt or oil, gently polish your Diamond with a brush for a few minutes and then dry with a clean, soft towel. Of course, you can bring your Diamond to your Jeweller for a professional cleaning at any time! After a good cleaning with this procedure, your April birthstone should shine even brighter.