These Geological Rock Samples are ideal for collectors and educational purposes. Our rock specimen trays come complete with explanation labels, showing what the specimen is and where it has come from. We also sell bags of loose rock which are ideal for schools and colleges, and special rock sets perfect for beginners. All of our rock samples are genuine and come professionally trayed in 3" by 2" white rock trays. We sell Sedimentary, Igneous and Metamorphic rock.