So recently I did a Priffdinas achievement "Sing-Along-a-Seren Verse 5" where I had to use a crystal dagger to damage an Iorwerth guard/scout. I want to repair the crystal dagger so that I can resell it in the GE. So far I tried Bob's brilliant axes and the armour stand in my Player own house, but it doesn't allow me to fix this weapon. Is there a way to repair a crystal dagger?
You should be able to repair it in the Ithell District in Prifddinas, either by paying Eluned or Islwyn or with harmonic dust at the crystal singing bowl.