Delivering pure half-cut diamonds (though unable to buy them?) (15)
I believe the answer is:
underprivileged
'unable to buy them?' is the definition.
I can't tell whether this definition defines the answer.
'delivering pure half-cut diamonds' is the wordplay.
'half-cut' is an anagram indicator (half-cut can mean drunk).
'diamonds' becomes 'd' (abbreviation in bridge say).
'delivering'+'pure'='deliveringpure'
'deliveringpure' anagrammed gives 'underprivilege'.
'underprivilege'+'d'='UNDERPRIVILEGED'
'though' is the link.
Can you help me to learn more?
(Other definitions for underprivileged that I've seen before include "Poor" , "In need" , "no advantages" .)