Stone altar base rebuilt (9)
I believe the answer is:
alabaster
'stone' is the definition.
(I've seen this before)
'altar base rebuilt' is the wordplay.
'rebuilt' indicates anagramming the letters.
'altar'+'base'='altarbase'
'altarbase' with letters rearranged gives 'ALABASTER'.
(Other definitions for alabaster that I've seen before include "White translucent form of gypsum used for statues, vases etc" , "White gypsum used for carving" , "Arabs tale (anag.)" , "Altar base (anag)" , "White stone carved into ornaments" .)