Super lightweight, love the cloudy white swirl on these. ** All earrings are sold as-is; if they don’t have backs, I’ll include a pair of simple slide-on backs. No clue if they are nickel-free or hypoallergenic, but none of them are actual gold or sterling silver. Essentially, they’re all “costume jewelry” and were either purchased at Dillard’s, Charming Charlie, online, or a small boutique. ** Bundle a few pair and save!