Price listed is for two pieces. These are actually ear clips. However, the plating on the back is bad on all of them and the plating in the recess is bad on some of them. The clips backs are slightly sprung and will need to be adjusted to use them as ear clips. So, we are selling them in the with the settings. You can just use some pliers to clip off the backs. The setting portion is approximately 31mm on the outside and the recess on the inside is slightly over 28mm for a 28mm flat back stones. These can be used for resin, epocxy clay and more.