After several day's wear, the most perfect diamond in the world will look duller than it should. Because sparkle and shine are what we enjoy most about diamonds and all jewelry, keeping it clean should be a priority. Fortunately, effective jewelry cleaners can be made at home using simple ingredients.

Measure 1/2 cup ammonia, 1/2 cup dishwashing liquid, and 1 1/2 cups of warm water into the glass jar, preferably one with a wide mouth. Mix gently. For a smaller amount, measure 1 tablespoon ammonia, 1 tablespoon dishwashing liquid, and 3 tablespoons water in a small glass dish.

Drop jewelry gently into the mixture in the jar. More than one piece at a time will work very well. Allow to soak for at least 10 minutes.

Remove pieces one by one, gently scrubbing the backs of stones or other recesses with a baby toothbrush or other soft brush, if necessary. Rinse with clean warm water and lay out each piece to dry on a dry cloth. Polish each piece with a dry cloth.