I visited Bucknell University with my son. They have an art gallery on campus with works in it by William Lasansky, one of their faculty. He works with granite that he finds on an island off the coast of Maine. There used to be a large granite industry there, and he is able to find loose pieces of quarried rock for raw materials.
Very interesting combination of angularity and curves, polish & rough, finished & raw.
More images from a sculpture park.