Costume Jewelry Cleaner Diy . Don’t worry if you leave it in longer it won’t hurt it. After they soak, get out an old toothbrush and a towel. Make Your Own DIY Jewelry Cleaner Down Home Inspiration Jewelry from www.pinterest.com Put 3 drops of lemon essential oil in it. White vinegar is a popular natural cleaner. Drop your jewelry in the mixture for 10 minutes.