Hello Kerry! This tile is from Dal Tile. It is a ceramic tile that was made to mimic a real Italian marble called Daino Real. Let us know if we can be of further assistance.
Tuscany Builders

Thanks so much. I'm on their site, and the only MOP ceramic tile is white. I love this tile because it appears to be beige and white swirl. Do you by chance know the name? Daino Real isn't listed on their site. Many thanks!

The Mother of Pearl tile (white iridescent) is actually inside the shower box and niche. The field tile is called Niciolla 10x14. Sorry for the confusion!
Tuscany Builders

Thanks for the quick response. The field tile seemed to have a shine to it, I thought it had mother of pearl in it!

Hi Kerry, if you're interested, we also have tiles here made of mother of pearl http://www.glasstilestore.com/salesperson/result/?q=pearl