Stone, only without large cross (4)
I believe the answer is:
onyx
'stone' is the definition.
(I've seen this before)
'only without large cross' is the wordplay.
'without' suggests deleting specific letters.
'large' becomes 'l'.
'cross' becomes 'x'.
'only' with 'l' removed is 'ony'.
'ony'+'x'='ONYX'
(Other definitions for onyx that I've seen before include "Marbled stone with layers of colours" , "Form of quartz" , "material for making cameos" , "Agate with different bands of colour" , "Stones" .)