Crossword Genius

Priceless stonework found in lodges (11)

Ross

I believe the answer is:

freemasonry

I'm a little stuck... Click here to teach me more about this clue!

'priceless stonework found in lodges' is the definition.
I can't judge whether this definition defines the answer.

'priceless stonework' is the wordplay.
'priceless' becomes 'free' (I can't justify this - if you can you should believe this answer much more).
'stonework' becomes 'masonry' (I've seen this before).
'free'+'masonry'='FREEMASONRY'

Can you help me to learn more?

(Other definitions for freemasonry that I've seen before include "International (lodge) fraternity" , "Tacit understanding" .)

I've seen this clue in The Globe and Mail.
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