I'm basically reviewing this because I had a hard time visualizing the actual size based on the measurements in the listing. I've added a few pictures including one next to a quarter to help anyone else who might be a bit confused. The outside is smooth and polished, the inside is concave/hollow. It springs open and closed smoothly and appears to be quite sturdy. The reason I'm only giving it 3 stars is because it's a bit overpriced for the size and amount of silver.