The tile is available at a variety of sources. You can fine it on line at Modwalls. It is a white 3 x 6 glass tile.

When buying a white glass tile, just ensure you are getting a Virgin white glass. Buying a Virgin white glass will ensure It does not have the green hint in it that is natural with glass tiles. Our Brilliant white glass tiles available in 3x6", 4x8" and 4x12". They are made from Virgin white glass so you end up with a crisp clean look and not a odd green hinted tile, which is so disappointing :(

You can see from the attached picture we have put our Brilliant white glass tile next to our Ocean Gray color to show how clean and white this Brilliant color actually is.

Brilliant white glass tiles are available online from The Builder Depot for $9.95 a square foot and Free Shipping (thru 2015): http://www.thebuilderdepot.com/glass.html