French holiday home containing rendered stone (7)

I believe the answer is:

granite

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'stone' is the definition.
(granite is a kind of stone)

'french holiday home containing rendered' is the wordplay.
'french holiday home' becomes 'gite' (I've seen this before).
'containing' is an insertion indicator.
'rendered' becomes 'ran' (I can't explain this - if you can you should give a lot more credence to this answer).
'gite' enclosing 'ran' is 'GRANITE'.

Can you help me to learn more?

(Other definitions for granite that I've seen before include "Tangier (anag.)" , "Tearing (anag.)" , "Hard igneous rock" , "Constituent in Dartmoor" , "Showing great resolution" .)

I've seen this clue in The Independent.

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