Thanks for your kind words on my basement family room thread! I thought I'd stop over and give you some info, I'm not sure if you made any decisions yet, but the stone I bought for my gas fireplace set-up, was from a tile distributor in my area called: The Tile Shop
is a link to one near Raleigh, but my fireplace is a gas zero clearance fireplace where this is absolutely no heat above the fireplace, yours looks like a wood burner, not quite sure, but many people came into the Tile Shop and bought the same stone as the one I bought for even the outside of their house, so it's installed and used in many area's.
Here are a couple of pics to show what it looks like, and how far I have got done, I'm on weight restrictions through the rest of this week, but very close to having it done by end of this weekend.
The pieces are 23.5" long x 5.875 wide, x 3/4 to 1.0 plus ( thickness varies with stone pieces ) but the back sides are mostly flat, here is a pic of what they look like:
Here is the current pic before I finish the rest this weekend, more pics will be at my basement / family room thread, if you have any questions, let me know, I'll be happy to offer any suggestions and or help in any way I can, one thing I can tell you is I learned a-lot by many suggestions by many on here, and all I can say is it's tough doing an all-in-one type of room, but with some homework and making some good decisions, will make it all worth it in the end!
take it easy.