Been going through some of the items I have had kicking around the shop forever and this is one of them. 20 years ago there was a company making cameo pins from agate cameos and they wanted to wholesale me a product line of them. So they sent me a couple samples and this is one of those. Now these agate cameos are nice and they are actually fairly expensive which is why I couldn't understand why this company mounted them the way they did. They have this very odd rhinestone and pearl frame and then the back brooch part is just steel with a easy lock pin on it. That means it doesn't have a spinning safety catch. Anyway, I thought how am I going to sell expensive agate cameos if you put them in this type of setting? Needless to say I never did buy from them. So, perhaps that pin is fine with you, or maybe you can remove the cameo. Not sure how it is secured.