I have no piercings. (My earlobes are perfect, so why ruin them? ) And as I have a nickel allergy, I follow my doctors' advice about not wearing earrings all the time. I do, however, wear earrings for some hours several times a week.
I prefer wearing medium or big earrings. Tiny studs often look fine on others, especially petites, but would "disappear" on me. It is a matter of proportions. When trying small earrings, I have always found that they make my nose and ears look even bigger than they are. Besides, I think small earrings look outright dull on me.
Some of my earrings are coloured stones or metals, and I also have big white pearls. But most are in silver or silver-looking materials. I will happily wear silver earrings for any occasion.