Below are some links of manufactures and suppliers of Veneer choices.
Omega color texture
Cornodo Stone veneer
General Shale Brick
Block BBQ'S Fire pits JSM Masonry Brick Block Stone concrete Pavers, Fireplace Remodel, Block Repair,stone veneer,BBQ islands, Hardscapes,Retainer-walls
This is the most important step in the process of making a great BBQ.Having a proper foundation will insure a longevity.