It always best to remove your jewelry before bed to increase its longevity and avoid breaking the piece during your sleep. That being said, it will not harm the surface of your jewelry if you sleep in it. Delicate pieces like dainty necklaces, bracelets, or chains can snag on your nightwear or bed sheets. So, taking your gold fill jewelry off and wiping it to remove dirt is a great way to ensure it stays brighter for longer.