So, I always had the notion that real, expensive Diamond earrings automatically came with screw backs. Especially from places like Blue Nile, James Allen, etc. I was sorely disappointed to find out that no, they do not. James Allen charges $125 just to change your posts from pushbacks to screw backs. I did a little Googling to find these, and they are a great alternative to spending $125 just to get what, in my opinion, should be included when buying earrings for the prices they charge. I definitely recommend these to anyone in conversation about earrings.