They rarely get mentioned around here but I took a shot with rock from saltycritter.com What set them apart with others I talked to is even though I was getting dropshipped rock they were willing to help me selct size and shapes. They did an incredible job and they were very nice to deal with. On top of all that the rock arrived better than expected and was a great price. They also steered me away from a more expensive rock telling me that it hasn't been coming in as nice as it used to.
I got 100lbs of Uaniva rock and the toal weight of what I ordered was 126 lbs, in other words it wasn't a 50lb box of rock with 10lbs. being the box itself.
http://saltycritter.com/liverock.htm
Sorry for the blurry photo but here is what a 50lb. box looks like.
After curing...
