It's a quartz ledgestone. As far as a "brand" is concerned, it isn't something that is labeled, you would just get it from a local stone supplier in your area. The way the stone ends up looking is really dependent on how the masons install it, in other words, how tight the joints are, whether it's laid in even rows, how much grout is used, or whether there is no grout at all, which is called "dry stacked". I don't know where you live, but I could reach out to one of my stone suppliers in Phoenix and find out who you could contact in your area?