stone dealer; stonemason
Refers to a person or shop that deals in stone, such as a stonemason or a seller of stone materials. It is a sensitive term, possibly because it can be used as a euphemism for a gravestone maker.
祖父は石屋を営んでいた。
My grandfather ran a stone business.
Compound of 石 (ishi, 'stone') and 屋 (ya, 'shop' or 'dealer').