I'm not sure how much development yall have put into the gem rework, but I have a suggestion for gem sockets.
Since gem upgrading resources eventually become "obsolete" after the gems fully upgrade.
Why not allow the gem vender to attempt to "socket" a piece of gear you insert into a new tab?
Green = 10% chance to add a tier 1 socket. (The same item shows up into your bag with or without the tier 1 socket)
Blue resource = 30% chance to add a tier socket. (The item shows three times all with a 10% chance to show a socket) you could add a chance to convert to an empowered if you want
Purple resource = Turns the socketed item to an empowered socketed item OR has a 30% chance. (Probably just 100% chance)
This would still keep that resource in the game and also allow people to keep a "bis" item if yall are into min max like that.
Just a quick thought, again not sure what yalls full idea or plan with gems are but a way to keep that resource important.