Only the Heart shaped earrings come with normal earring backs, these are also the only ones actually stamped on the post '14k'. The earring backs however ARE NOT 14K gold, they are gold tone. If you're buying these because you're allergic to other metals like I am, they will cause irritation.
The square and the round cut come with sillicone earring backs, but they seem to work well, and they aren't causing me irritation, however they aren't stamped anywhere on the post of the earring to actually be 14k gold, so there's no telling. I do think that they are what they claim to be, as they aren't causing irritation, but it would be nice to see it stamped properly. The square and the round cut also 'glitter' more than the heart, they're pretty, but they also seem pretty flimsy.