Diorite hi-res stock photography and images - Alamy
EISCO Raw Diorite, Igneous Rock Specimen - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms: Amazon.com: Industrial & Scientific
Rock Identification with Willsey: Intrusive Igneous Rocks (granite, granodiorite, diorite, gabbro)
What is Diorite? - WorldAtlas
Geology: Granite, Granodiorite and Diorite. - YouTube