Dragonglass
From A Wiki of Ice and Fire
Dragonglass is volcanic glass, or obsidian. Children of the forest make weapons out of dragonglass, including daggers and arrowheads.[1] Dragonglass weapons are one of the few weaknesses of the Others. An Other that is pierced by an obsidian blade dies almost instantaneously. The Valyrians also made use of obsidian to make their glass candles.[2] Obsidian blades are very sharp but brittle.
References and Notes
- ↑ A Game of Thrones, Chapter 66, Bran
- ↑ A Feast for Crows, Chapter 45, Samwell V.