Hello and thanks for the question- the countertops are Cambria quartz in Devon. When compared side by side, the sample is closer in color to Caesarstone's Concrete, with a bit of brown that softens the tone. We've used both products and they both perform very well.
I've attached a detail image of this counter at the limestone backsplash, and you can find more information on the product here: http://cambriausa.com/en/our-collection/design-palette/Devon/
Hope that helps!

Thanks! I like the mix of tones in there. We actually like concrete as well.