Holy cow, I must be learning good search terms in my research! Found them! Scroll down the page a bit.

Here is a link that might be useful: The tiles!

More dimensional tiles from Heath

Here is a link that might be useful: Heath dimensional tile

You are awesome! I suspect it's going to be our of budget, but even the right search terms will help. Thanks!!!

Hi Joy, this tile is produced by ModCraft in New York. We are a modern handmade tile studio here in the Hudson Valley. This tile is a 6 x 6" dimensional tile called Peak. The glaze shown is a variation of the Dusk glaze. All of our glazes have some degree of variation in tonality and surface effects

You are welcome to contact me from our web page to ask any questions you have. here is a link to the product page.

Our tiles are made of porcelain and are high fired, designed and produced in our studio

Thanks for you interest
David

Here is a link that might be useful: ModCraft Peak tile