We are selling a variety of high quality natural graphite crystals. Depending on size, our products have various degrees of perfection and surface features. The samples will be supplied loose in distilled water or mounted on conductive or nonconductive surfaces. Our samples come from many regions of the world, including the eastern United States, Africa, Western Europe, and many more. There are many potential uses for graphite crystals, such as substrates for experiments, scanning probe microscope calibration, and graphene research. Please contact us with quantity, size and description of what you need and we'll do all that we can to accommodate your needs.