Diagram: Ard Skellig aketon

Diagram: Ard Skellig aketon is a diagram in the Witcher 3: Wild Hunt. It is used to make Ard Skellig aketon. It can be purchased from the following merchants:
 * The Armorer in Kaer Muire
 * The Armorer in Oxenfurt
 * The Merchant at the Sawmill at Ard Skellig