Crossword Genius

Gypsum and basalt are rocky (9)

Ross

I believe the answer is:

alabaster

'gypsum' is the definition.
(I've seen this before)

'basalt are rocky' is the wordplay.
'rocky' indicates anagramming the letters.
'basalt'+'are'='basaltare'
'basaltare' with letters rearranged gives 'ALABASTER'.

'and' is the link.

(Other definitions for alabaster that I've seen before include "White translucent form of gypsum used for statues, vases etc" , "White or translucent mineral" , "Altar base (anagr.)" , "Arabs tale (anag.)" , "medium of sculpture" .)

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