society > leisure > the arts > visual arts > plastic art > sculpture or carving > [noun] > material (3)
Fine-grained black stone (typically a type of chert) upon which objects made of gold or silver can be rubbed to determine their purity; a piece of…
A soapstone or other soft mineral used for carving figures, esp. in China. Cf. pagodite, n.
Plaster of Paris; gypsum. as prepared for use in painting and sculpture.