Are they stud earings like u use after ur ears have been peirced? Do you know if they are nickle or silver or what the stud is? we don't know yet about my G'daughter if she is gona be like her mother, cuz she can only wear silver or gold so I was curious, my G'daughter is 7 now ( wow I'm getting old!) & she's so into Hello Kitty... F & W...