Post marked by August 15th. I just got mine in the mail last week, it's an interesting rock. Lahontan Agate. I did have a couple chunks in my batch that were not agate, one small green jasper and a couple of pieces of what I think is rhyolite, but there is plenty in there to work with. I'm really looking forward to it. I just started my current batch on pre-polish today, I'll start the contest stuff when this batch is done polishing in 2 and a half weeks or so. I just have a little 3 lb. rotary and nothing else, but I'm going to give it my all. Good luck.