Hi plankandtrestle The undertones are tough to pick until it's in the flesh! Monument could be a good contender... if you want a true charcoal you could ask the paint counter to use only pure black and white to get your desired charcoal... I have monument on my gutters, downpipes and trim see below. I've paired it with wallaby which is a brown grey (you could darken) Hope this helps K x

The photo is to feature bench top and table by Timber Revival. Maybe contact them (Website, Facebook or on Houzz) to find out about tiles in the picture? They may be able to tell you, or find out from one of their clients. They really are beautiful tiles.

you're welcome :) post a photo when you're done :)

Or do a Google image search, sometimes you can get lucky and the website pops up. I was looking for a table design and managed to find the makers and the specialist store this way!