This Diagram: Lesser glyph of Quen can be purchased from most armorers, including: * Armorer in Midcopse * Fergus Graem * Willis * Yoana * The Pellar * Keira Metz * Scoia'tael Merchant in the forest outside Novigrad * Merchant in the red cap outside the Nilfgaardian Army Group 'Center' Camp * Gremist