Ysgith rune

Can be purchased from Haggard in Vergen. Although classified as a Crafting component by the game, there are no known diagrams which utilize this item.

To use a rune, Geralt simply drags it over to one of the rune slots on a suitable sword in the inventory panel.

Ysgith-Rune Rune d'Ysgith Runa di Ysgith Runa Ysgith