Can't get rid of Practice Citrine

[Phonsekal Laure]

Hello, I'm stuck with Practice Citrine from a guide quest and I can't get rid of it by socketing the gem and selling it like others have done (was this feature changed?). Please help me get rid of it. When I click on "Submit a Ticket" in the support page, it doesn't let me submit a ticket, but redirects me to this instead: https://support.bladeandsoul.com/hc/en-us

[Saito Sacchi]

imbue the gem into any weapon and sell that weapon. story should supply some, other than that you can get a GC weap from transmute. just make sure you don't sell your actual weapon.

[Rhiakath]

Can't you just finish the quest and it goes away?

[DrShodax]

It don't work , the game won't let me sell a weapon if a gem is attached...

of course the quest is completed and the npc don't care of me anymore.