I would also love to know about the tile on the fireplace. Please.

Ah, here we go! That is the work of builder Hann Builders in Belaire, Texas: https://www.hannbuilt.com/ and their interior designer (I designed the building itself, but not the finishes) whose name is escaping me right now. I admired the tile, as well, but don't remember the specifics about it... will try to find out...