Water can be brushed over them, or they can be used on wet paper to create more painterly effects. Water-soluble pencils tend to be softer than ordinary coloured pencils. Charcoal and graphite ...

A batch of graphite has just been delivered to this pencil factory in Germany. Once it’s been thoroughly mixed with clay, it’s ready to go into production, with around 550 pounds of the stuff ...

Graphite — a naturally occurring crystalline form of carbon — is a common everyday substance best known as pencil "lead" (actual lead was never used in pencils ... also water soluble, ...