Nicely done cameo in excellent shape. It was intended as a brooch. Previous owner has put a jump ring and 16 inch brass chain on it. I will leave that on. It is very easy to remove if you do not want it on. I will remove if you ask. I like this size cameo it is 36x30mm That is about 1-1/2 inches tall not huge, not small. I can not find a gold mark on this. I am going to bet it is gold filled but I don't know for sure. It has an unusual catch on it. The catch appears to have a hallmark looks like "AL" That is how I am dating it. The catch is called a lever catch. It is a safety catch but a bit different to the ones you are used to. The design popped up around 1900 and I don't believe it was in use that long. Most people put the catch from 1901-1910 so that helps date the cameo. Would make a great gift. Comes gift boxed.