These dainty star stud earrings are .5" and are signed Swarovski (the swan marking is used by Swarovski).   As you'll see in the photo, even the clear earring backing disk is marked Swarovski.

One minor flaw that I noticed when inspecting the earrings with my jewelers loupe is that the silver toned plating has flaked off in a few areas.  This is not noticeable without magnification, and the earrings look beautiful on!