posted on Jan, 10 2015 @ 01:20 PM
I think it is safe to say it was an alloy which had copper as its major component which would give it the red/pink coloration.
So it could be:
or some other copper alloy
I seriously doubt it was brass because Plato clearly distinguished Orichalcum from brass, he was well aware what brass was and there is no way it was
second in value to gold.
edit on 10-1-2015 by rowanflame because: (no reason given)