Related Clues:

• Crystalline limestone often used in sculpture
• Hard, crystalline, metamorphic rock
• Crystalline limestone often used by sculptors
• Hard shiny stone used by sculptors
• Type of rock
• Hard limestone that takes a high polish
• 'Hard, crystalline rock (6)'
• The saintly one is the hard one of 22 across
• One is holy but hard
• The hard but holy one
• It's hard to make one a saint
• Hard as a holy one
• It's hard to wait for it, by the sound of it
• It's hard for one to follow a saint
• 'This holy, hard one is heavy (5)'