I love how different and unique this is! The only drawback is that the button face is not made of white sapphire, as I originally thought (my own fault for not paying attention), but metal. Since sterling silver gets tarnished and needs to be cleaned occasionally, it will be rather difficult to polish in all those grooves. Still, it's only a minor problem, and doesn't make me love this piece any less!
The button pendant on this is so much fun. What a creative piece. Love it. I just wish the chain came with a lobster closure but the good thing is that you can change the chain. The price is also right being that black spinel is so expensive these days because of its popularity.