Hi jethere, This splash is made up with a porcelain tile that I cut to 3" widths and custom lengths to get the random detail and texture. The standard tile size is 6x24 as used in the first row above the granite. The black squares are soapstone cut to 3x3 and inserted randomly. The light squares are a glass tile in a opalescent color. My customer wanted something one of a kind and this was the ticket! It is textural, dynamic and eye catching. I hope you try it out in your own way. Send me a picture of the results!! Rylie