They come WG/YG 14kt, 18kt or platinum. I got these studs a few years ago and the jeweler "threw" the backings in the deal because the studs were expensive. I've seen this type of backing online. Like AME, I like to keep the metals the same. If you want a pair and have trouble finding ones you like...PM me.Yes it does, and I'm banging my head on the wall for not thinking that a heavier stabilizer / back clip would keep droopy studs facing up. I had mine reset thinly so they'd lose some weight from the metal, I'm so angry with my self, I loved the previous setting but they studs would look down sadly. I'm also mad at the jeweler....