Some jewelers have a nice clear makers mark that looks cast into
Yes, it is cast into the piece. It was stamped into the original
cast metal model before they made the rubber mold to reproduce their
production castings. I have never been able to get a crisp stamping
of my mark other than in metal. If I know that a mold will only be
used for one type of metal, such as sterling, I will put that stamp
into the original model, too.