Classical chequerboard flooring in White marble and Black marble tumbled edge.
This is a look that lends authenticity to a restoration project or a new build in character style.
In 400 x 400 x 12mm thick.
Apply colour intensifying sealer such as Stain Stop Plus or Lithofin Colour Intensifier to deepen the colour of the black. This will happen in time anyway but to fast forward the process you can cheat a bit !
Then wash with suitable Stone Soap such as Easy Care to enhance the colour