uncommon objects (8)
I believe the answer is:
rarities
'uncommon objects' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rarities that I've seen before include "These are very scarce indeed" , "They don't happen often" , "Scarce and valuable things" , "They're very seldom seen" , "Things which seldom occur" .)