“
Wand-quality aspen wood is white and fine-grained, and highly prized by all wand-makers for its stylish resemblance to ivory and its usually outstanding charmwork. The proper owner of the aspen wand is often an accomplished duellist, or destined to be so, for the aspen wand is one of those particularly suited to martial magic. An infamous and secretive eighteenth-century duelling club, which called itself The Silver Spears, was reputed to admit only those who owned aspen wands.
”
”
J.K. Rowling (From the Wizarding Archive (Volume 1): Curated Writing from the World of Harry Potter)