This item states that it is treated with anti-tarnish treatment, but even though I kept anti-tarnish tabs with these earrings, they still tarnished very badly. Frankly, I don't understand it. They should never have tarnished like this at all. It came off when I used an anti-tarnish treatment, but it concerns me when I see statements that something is "anti-tarnish" treated, and yet it tarnishes anyway, even with the 3M anti-tarnish tabs in use!
You have to bend this earring straight (or pretty close to straight) to add beads then re-shape it to look like an earring. So you might just save the money and buy a ballpin instead!