Hi there, thank you for your question. The white/gray tile is a 24" x 24" polished porcelain tile that we purchased from The Tile Shop. Here is a link: https://www.tileshop.com/products/calacutta-bianco-gloss-porcelain-wall-and-floor-tile-24-in-680205

The small black accent is 4" x 4" squares, cut from this honed limestone tile: https://www.tileshop.com/products/noir-honed-limestone-floor-tile-8-x-24-in-655681

I hope this helps. Best of luck with your project!

April