Spinning Trilobite Pendant

This is a lovely piece that I put together pretty quickly. I've never done this kind of mechanical work before, but the trilobite is set in a spinning silver bezel. I was quite afraid of cracking the trilobite-it is such a soft material. I would have felt bad destorying a fossil that managed to survive 7 million years, luckily my bench isnt that dangrous! The movement is not as smooth as I would like it, but it turns fairly well.