Hypoallergenic Jewellery
Hypoallergenic jewellery is for skin that reacts to cheap fastenings. This edit is stainless steel, the same metal used for the waterproof cuffs and chains.
Earrings and rings are the usual culprits. Start there, then add a necklace if the neck is the sensitive spot.
Jewellery for sensitive skin is the longer answer, including what to skip.