I have a new nickel allergy and was concerned that these maybe plated, but they're the real thing.  I have 2 cartilage piercings in the left ear and 2 in each lobe.  The tiniest studs are just a touch bigger than the posts and are the perfect subtle look for when I want to wear them to work (I sell mattresses - must be conservative!).  The largest studs are very flattering for my full face (I'm a size 18 and have a touch of chipmunk cheeks).  I'm really pleased with this set.  I've had them for a week and already worked each pair in at least once!