What kinds of jewelry is nickel free?

Silver and Gold are not necessarily nickel-free, in 9 carat gold there isn't actually that much gold! The gold in jewelry is alloyed with other metals - and it is crucial to find out what those other metals are. Look for "guaranteed 100% nickel-free". Find a supplier/retailer who caters to and understands this need. Many don't! Addition: Palladium and Platinum jewelry are nickel free. 950 Platinum is 95% pure Platinum and 5% of either Iridium or Ruthenium (all part of the Platinum family). Palladium is also part of the Platinum family, but much lighter and less expensive than Platinum. Only a small handful of jewelry designers, like myself, create jewelry using Palladium mixed with 24K Gold to yield a 18K Palladium combination.