As far as I can tell the achievements I've completed so far would have given me 950 gems, 850gc and 150gr.
If we were credited with this about ten days ago as people are suggesting, how were we credited with it ? Was there an in game mail or did they just add this in to our economy without telling us ? If it's the latter and it was just silently added it was a really, really stupid thing to do because there's no way I would notice that gold and granite getting added to my account - not a snowballs chance in hell - but I have been working on another gem pit and I don't remember seeing my gem count go up by two days worth of pit production.