The stone is a dark grey, not black like we were excepting. We bought coal canyon from another retailer who had the corner pieces but, didn’t have the strait pieces. That stone is black. The two stones don’t match even though they both are “coal canyon”. Disappointed the description didn’t accurately portray the color, or I wouldn’t have purchased it. Not sure I can even return it. It’s an expensive mistake to make when all you have is pictures and sellers description to go off of.