To me it looks like slate or something, maybe unpolished granite, though I've never seen that. She wanted dyed cement and this one had that look without the grainy texture and cost. I figured the shiny acrylic would show scratches when you drop a pan in there on accident. I don't know just speculation. My intent was to lightly sand the acrylic to a matte finish before I found this other one. So far the fake granite has been a pretty tough finish. If you drop a dish when washing they are sure to break though. Stainless was a 50/50 chance.