For today's how-to, we're showing you how you can get your engagement ring clean and sparkly using household remedies. And all of these techniques are perfectly safe for all different types of precious stones and metals. Whether you want to try using baking soda, dishwasher detergent, or ammonia, your precious piece will be clean and sparkly in no time. The bonus? You can also use these tips to clean other pieces in your jewelry box. On Allison McNamara: H&M top, Ann Taylor necklace.