1. This is actually 3D porcelain tile from Atlas Concorde from their Etic Pro line.
2. It's real marble from my kitchen island.
3. This is concrete wallpaper, from Piet Boon.
4. The answer is ceramic tile from Norway Wood Collection from Serenissima.
5. Once again, it's tile. Del Conca created this product that's lighter than actual brick, and look! the bend is built into the tile, so the edges are groutless.
6. This porcelain tile, called Revival, is engineered by Ergon as part of their Metal Style Series and is designed to look like oxidized metal.
7. This is Scallop wallpaper, in ivory, from Walls Republic.
8. This is oxidized metal, from the hearth under my woodstove.
9. This time it's tile. Specifically it's Naive from Lea Ceramiche. You can order large super-thin slabs that are more reminiscent of wallpaper strips than regular ceramic tiles.
How'd you do? Were you surprised by any of the answers?