Who says diamonds are only for jewelry? They are exquisite for creating precious artwork as well. The Uni NanoDia Low-Wear Pencil Leads are infused with nano-diamond pieces to create an unusually strong and high-quality lead. Multiple lead grades are available.
Unlike most H leads that are a little bit stiff to write and draw fluidly with
this lead is smooth and not scratchy. I can do rough sketches easily and it
never breaks. It does put down a grayer toned line than the 2b for example. I
enjoy that all Uni leads are equally smooth but just get lighter in tone as the
grade moves from b to h. I can imagine you could use these leads for shading too
since they are so hardy and evenly toned.