Stone sculpture stone carving. Alabaster and softer kinds of serpentine, all about 3 on the Mohs scale, are more durable than soapstone. Alabaster, in particular, has long been cherished for its translucence. Limestone and sandstone, at about 4 on the Mohs scale, are the only sedimentary stones commonly carved. Limestone comes in a popular oolitic variety, about twice as hard as alabaster, that is excellent for carving. The harder serpentines can also reach 4 on the Mohs scale. Marble, travertine, and onyx are at about 6 on the Mohs scale. Marble has been the preferred stone for sculptors in the European tradition
Robert Paterson (stonemason) Robert Paterson (stonemason) Robert Paterson (1715–1801), known as "Old Mortality", was a Scottish stonemason who took it upon himself to travel around lowland Scotland carving inscriptions for the unmarked graves of Covenanters martyred in the 17th century. Walter Scott made him a principal character in his novel "Old Mortality" (1816). Paterson was born near Hawick in 1715. Through the patronage of Sir Thomas Kirkpatrick, whose cook he had married, he obtained the lease of a quarry at Gatelawbridge, but in 1745 his house was plundered by the retreating Jacobites, and Paterson himself, a pronounced Cameronian, was carried off a prisoner.