See the problem is, I've had bad reactions with gold and certain grades of silver. I've found the only things that I can buy without worry is surgetical steel and titanium, however, for example with Claire's at least here I've found that I tend to have a reaction to them(even if it says steel), I can wear them for a few hours but only in my main lobe piercing(I've had it since birth so it's a little sturdier then my seconds which aren't that old), but even then I react. So I tend to have to sink a bit more money into metal quality.
Also, I seem to have some sort of swelling that popped up just after that picture, it looks a bit like a boil but I'm not sure what the hell is going on, so I'm planning a trip to my piercer and ask them for what they think I should do, when I go I'll gladly ask what the sizing is, and I'll send it to you via PM okay?