We recommend Satin for the inside ring finish. It is very comfortable. The other inside finish choices are Matte, Polished, and Satin. Satin has a feel like satin, Matte has the roughest finish, and polished is very smooth.
The outside finish is entirely up to you. The outside finish choices are Polished, Satin, and Matte. Some of the rings have a finish that can not be altered. They are Sable, Frost, and Sand Blasted.