The discovery of graphite pencil occurred when a deposit of graphite was discovered in England. The graphite deposit was extremely pure and solid, and it could easily be sawn into sticks.
Graphite came into widespread use after discovering a large graphite deposit in Borrowdale, England, in 1564. Appreciated for leaving a darker mark than lead, the mineral proved so soft and brittle that it required a holder. Originally, graphite sticks were wrapped in string. Later, the graphite was inserted into hollowed-out wooden sticks, and thus, the wood-cased pencil was born!