What does the stamp RSE mean on jewelry?
I have a pendant that has a square, facet cut very light yellow
gem that I believe is Yellow Tourmaline, set in a silver colored
metal. I believe it is Silver, but it may be White Gold. The back
of it is stamped "RSE 325". The 325 stamp was explained in a
separate question, but I can't for the life of me find anything out
about "RSE"
The relative standard error (RSE) is a measure of the
reliability of a survey statistic. The smaller the relative
standard error, the more precise the estimate.