Flexible Graphite Sheet is a carbonaceous elemental crystalline mineral whose crystal lattice is a hexagonal layered structure. The distance between each mesh layer is 340pm, and the spacing of carbon atoms in the same mesh layer is 142pm. It is a hexagonal crystal system with complete layered cleavage. The cleavage surface is mainly composed of molecular bonds, and its molecular attraction is weak, so its natural buoyancy is very good.
The Flexible Graphite Sheet and diamond, carbon 60, carbon nanotubes, etc. are all single elements of carbon, and they are allotropes.