Where to find RunewrightHe is located in Upper Mill, east of the lake in the far northeast of Velen. A quest called Enchanting: Start-up Costs will lead you to him – the recommended level for doing it is 32.
When you talk to him, he’ll ask you to give him 5000 Crowns for new tools. After that, he’ll ask for a chunk of jade. Once you bring it to him, he’ll start offering runewrighting services. Keep in mind, these are just the basic tools. If you want him to create better runewords, you’ll have to get him better tools. The advanced tool set will set you back 20,000 Crowns.