No, they have push backs with a button that you have to press for them to come out, the SA said I could change it to screw backs if I don't get use to it.
Those are called La Pousette backs. They are the best. Much better than screw backs IMO. I find them very easy to use and very comfortable, too. I have very similar earrings from Tiffany (diamond solitaire about the same ctw and four prong platinum settings). Love them! Enjoy yours!