Outside of checking the markings on a piece, here are a few things that may help you determine if they are gold: Gold (and silver, for that matter) is not magnetic, so if any of your items are attracted to a magnet, they are likely not gold. Acid tests that can test gold are also available for consumer purchase. If you want to be 100% sure, bring your items to a reliable jewelry store or pawn shop (like Empire Loan) and have them test your items for you!