Odd male with red and green gem (7)
I believe the answer is:
emerald
'green gem' is the definition.
(I've seen this before)
'odd male with red' is the wordplay.
'odd' indicates an anagram.
'with' says to put letters next to each other.
'male' put after 'red' is 'redmale'.
'redmale' with letters rearranged gives 'EMERALD'.
'and' acts as a link.
(Other definitions for emerald that I've seen before include "On of the Greens" , "Shade of green" , "Green - jewel" , "Bright green colour" , "Green gemstone" .)