Old city stable made of precious stone we hear (14)
I believe the answer is:
constantinople
'old city' is the definition.
(I've seen this before)
'stable made of precious stone we hear' is the wordplay.
I cannot really see how this works, but
'stable' could be 'constant' (associated in meaning) and 'constant' is found within the answer.
'of' could be 'o' and 'o' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for constantinople that I've seen before include "place that changed its name" , "seat for emperor" , "Former name of Istanbul" , "Old city" , "Old name of Istanbul" .)