Pietra Serena Sandstone
Next time you’re in an Apple retail store, take a look at the floor. If you’re in a newer store, you’ll notice that the dark gray stone is incredibly smooth, durable, and flecked with random bits of shiny material. The 30"x30" square tiles are made of stone called Italian Tuscan or Pietra Serena sandstone, and it’s a good material to keep in mind for your next flooring project.
As for me, my next flooring project of this caliber is about 10-15 years from now. As the song says, Don’t stop, believin’…