The first time I visited my spouse's old stomping grounds in Massachusetts, I was surprised to see granite curbing. It's durable and interesting, and seemed quite posh, even if it is a local resource.
In Houston we pay big bucks for gravel and rocks of any size. Our geology is more about being river/ocean bed not so long ago. Lots of clay, expanding and contracting with the rain, a royal pain to dig. And I'm still startled and amazed when I come across an oyster shell just lying about.