Jewellery from pandora

I have a few lv1 jewellery from the mini game now. But it seems they can not be traded or put in warehouse. Do I need those things later on or are they trash? What’s the best way to keep them if they have some value later in the game?

You can go to the NPC outside of TI’s town and buy solvent (in a reddish bottle) to dissolve them. Read the NPC’s text and it will how to try to level them up. Hope this helps!

You can reach the npc mentioned above by typing
-warp 1 {Enter}

In game