Blast area for sculpting stone (9)
I believe the answer is:
alabaster
'stone' is the definition.
(I've seen this before)
'blast area for sculpting' is the wordplay.
'for sculpting' is an anagram indicator.
'blast'+'area'='blastarea'
'blastarea' anagrammed gives 'ALABASTER'.
(Other definitions for alabaster that I've seen before include "Sort of gypsum" , "Form of gypsum used for carving" , "White ornamental stone" , "Altar base (anagr.)" , "White translucent form of gypsum used for statues, vases etc" .)