It is a glass tile and while we don't normall recommend glass tile for floors, this one worked particularly well. It's sandstone iridescent, 7/8" by Musefield. We used antique white grout. The room was made pretty for photography, but normally there are several rugs/bathmats to prevent slipping and sliding!

how is the floor tile holding up?

I didn't use it in my guest bath but want to use it now in another bath I am remodeling. It is so fabulous.

Dniiro, thank you for your question. We finished that project in 2011 and have not had any problems, complaints or worries from the client. Great product + great workmanship = longevity!