More to explore:
12x24 tile patterns - Google Search
Mirage Slate Gray Porcelain Floor Tile (12" x 24") with "Shadow" Grout
Love these floors...look like tiles that look like wood - so much easier to clean!
Clean, stylish basement - tile and French doors.
12 x 24 light gray tile in a brick pattern boys with linear cararra shower
dark grey tile floor....See the direction of the tiles? I think the other direction would be better.
Daltile Blanc linen - 1/8" recommended grout joint (or 3/16" when used in a staggered brick pattern, where the overlap does not exceed 33%)
slate floor tile - again love it for the kitchen or entryway