There’s nothing delicate about these sparkly stones. One of the hardest and most durable materials on earth, they’re also the easiest to clean. Kamdar advises using warm water with a few drops of dish soap. Let your jewelry soak for an hour or more to loosen any debris, then brush the tops, sides, and inside with a clean, soft-bristled toothbrush. Rinse with clean water, wrap in a paper towel, and shake for 10 seconds to knock water drops out of any nooks and crannies.