A single piece of large single-crystal graphite-graphenium crystals with approximate dimensions of 15mm x 15mm. Our crystals are natural, having HOPG-style properties with domain sizes approaching centimeters. Indeed, graphene flakes reaching 1mm have been isolated using this specific kind of graphite. No D peak is observed in Raman. 
 
Ideal from exfoliation studies to prepare large graphene flakes, atomic force or scanning tunneling microscopy studies.