Originally, I chose these just to replace one of the CZ with a 1ct diamond I had from an engagement gone bad, but when I got them, I think I will just wear them as is. When one gets bad or discolored/dull, I can just put the other one in. The posts are stamped .925 and the ear backing is also stamped .925. The earrings arrived very quickly, packaged in a bubble wrap envelope in perfect shape. I would say a very good value for the money!