Prized (6)
'prized' is the definition.
('value' can be a synonym of 'prize')
This is all the clue.
(Other definitions for valued that I've seen before include "Estimated; appreciated" , "Esteemed" , "Assessed the worth of something" , "Considered to be important" , "Rated highly or made assessment of" .)
'prized' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for valuable that I've seen before include "Having worth or merit" , "Blue lava may be worth money" , "Worth a lot, unlike 33 Across" , "Precious" , "Expensive, prized" .)