Michelle Drenckhahn Thank you for your interest!
I do not have the specifications on this specific product. However, I do know that it is a masonry stone rather than a tile. The contractor purchased it from the local supplier.
Michelle Drenckhahn Thank you for your question. The tops are all granite. The island is a different (coordinating) color than the rest. Our local distributors often name the stones themselves. Therefore, I am not sure what the "universal" names would be. However, I am sure you could find them or something similar at your local yard/selection center. Best of luck to you!