The Diamond is the face on the left. There is a Class 2 gully (when snow-free) on the right side of the buttress shown, but a more sporting way to climb is to use the buttress itself. Expect plenty of Class 3 and 4 climbing, and some Class 5; the closer you stay to the crest, the harder and better the climbing is.
The buttress does not join the Diamond directly but rather drops to a notch about 100 vertical feet below the Diamond's summit. From there, two viable options-- a snow climb and a Class 5 face climb-- exist.
This buttress is not to be confused with Diamond Buttress, which is on the left side of the Diamond as seen here.
Snowy Range, WY-- July 2010