This is an amazing ring. It has fantastic blue tourmaline that measures 8x5 mm appox. It is sterling silver and hollow form construction. I have giving it a high polish almost mirror like. It is just under an inch long and almost 1/2 inch wide. It is very comfortable to wear. It is a size 7. I know that you will love this ring as much as I do. It is a great piece to wear everyday or to keep for a night out, either way you will get noticed for it.