In 1565, the German-Swiss naturalist Conrad Gesner was the first to describe graphite as a distinct mineral. He also described a writing instrument made of graphite inserted into a wooden holder. Gesner's description is one of the earliest accounts of the substance that would become the core of the modern pencil, and his work helped to establish the scientific understanding of this material.

Gesner's identification of graphite as a new mineral was an important step in the development of the pencil. By distinguishing it from other substances, he contributed to the understanding of its unique properties as a writing material. This scientific recognition helped to legitimize graphite as a tool for writing and drawing, paving the way for its widespread use by poets, artists, and scientists alike, and cementing its place in the history of literary tools.