Hi! Thanks for the inquiry - The glass tiles are from Sicis and a custom blend that was specially made for these clients to achieve a certain color of water - I don't recall the specific tiles used for this blend but it was purchased through Cactus Tile & Stone, Scottsdale - Give them a call 602-275-6400 Ask for Eric - I'm sure he can help you out. Thanks for asking!! Let me know if there is anything else you would like to know about the tile or if you need any help with your project.