Castes and Tribes of Southern India/Silpa
Silpa (artisan). — A sub-division of the Kammālans, Panchālas or Kamsalas, whose hereditary occupation is that of stone-masons. In the Silpa Sāstra, the measurements necessary in sculpture, the duties of a Silpi, etc., are laid down. I am informed that the carver of a stone idol has to select a male or female stone, according as the idol is to be a god or goddess, and that the sex of a stone can be determined by its ring when struck.