Lively male with red and green stone (7)
I believe the answer is:
emerald
'green stone' is the definition.
(I've seen this in another clue)
'lively male with red' is the wordplay.
'lively' is an anagram indicator (I've seen this in other clues).
'with' says to put letters next to each other.
'male' put after 'red' is 'redmale'.
'redmale' anagrammed gives 'EMERALD'.
'and' acts as a link.
(Other definitions for emerald that I've seen before include "...re medal? (Anag)" , "On of the Greens" , "and 1 Across: Ireland" , "Precious gemstone" , "Green gem" .)