I purchased these to wear as daily earrings - I'm not much a jewelry gal, but I wanted something I could put in and leave in.

I love that they're lightweight and the posts stay securely fastened to the backing.  I haven't had any trouble with them coming open in the two weeks I've worn them.
The only con is that because they're lightweight, the front (flat piece) is hollow inside, so it felt a little flimsier than I'd like it to.
They're beautiful, bright white gold, with lots of shine.  I'd definitely recommend them to friends.