About your Siel's Supreme Harp... Restoring it will take some work.
It will also require some quality materials.
If you truly care about the weapon--a weapon to which you entrust your life!--then you'll procure those materials for me.
You've heard of [%dic:STR_DIC_I_Insidium_01]s. They're what I need to fix this mess you've made.
You haven't heard of it? The special ore created when Lady Siel and that horrible Tiamat faced each other in battle, lo, those many years ago?
Well, [%dic:STR_DIC_N_Honeus] has some. He might share if you do him a favor.
Foolish Elyos.
Oh. You again.
[%dic:STR_DIC_N_Honeus] isn't that unreasonable. Go get his [%dic:STR_DIC_I_Insidium_01] and keep that harp in your Cube for me.
Finally! Now I can get to work.
Wait a moment...
Ah-hah! It's a work of staggering genius. Go on, try out your new harp.
Bring the [%dic:STR_DIC_I_QUEST_30039] to [%dic:STR_DIC_N_Gefeios].
[%collectitem]Restore your Siel's Supreme Harp with Gefeios and a Nox Ingot.
Gefeios said he could restore your Siel's Supreme Harp if you brought him some materials. Namely, a Nox Ingot.
You went to Honeus and received one in return for a favor. When you brought the ingot back to Gefeios, he restored your Harp into its true form: Noble Siel's Supreme Harp.