Agreed to Shade's blinding brilliance. I think making the DR higher than the greater stone golem's is a good way to peg them on a similar CR level with the diamond golem's reduced HD.
Technically finished, but the AC is really really bad for a CR 5, especially one with that few HP. Can we give her some sort of unearthly grace type ability?
No thanks. It's already got DR/slashing. The combo makes it pretty impossible to damage.
Edit: In Pathfinder, the howler quill penalty is straight sickened, which I rather like.
I think we should put a rank into Climb, if only for the reason that we can include it in the stat-block. Also, considering its religious role, adding Know (religion) and Know (dungeoneering) makes sense, again if even only a few ranks.
Slotting it in between a flesh golem and a stone golem works for me, but only if we give it some manner of special attack--all golems except flesh have one, and this as written now is just a beat-stick.
How about DR 5/slashing and adamantine?
Wait, do you mean you favor Persuasive because it gives them a boost to Intimidate, despite them not having any ranks in?
Negotiator: +2 to Diplomacy, Sense Motive
Persuasive: +2 to Bluff, Intimidate
I agree with your assessment on using the stats for a stone golem as a start. As you already know, I strongly dislike the immune to natural defenses. We'll see what freyar's opinion is.