Heron-mark swords are a type of weapon featured in the fantasy series The Wheel of Time by Robert Jordan. These swords are characterized by a distinctive symbol of a heron, which is engraved on the blade. The heron symbolizes skill and mastery in swordsmanship, indicating that the wielder is a highly trained fighter. In the series, heron-mark swords are often associated with the Aiel, a warrior culture known for their combat prowess. The swords are typically made of high-quality materials, making them both durable and effective in battle. They are considered prestigious items, often passed down through generations.