Dis is a major trade hub with a lot of unique shops and npcs but it currently lacks a gem scale to sell your precious gems to which is something every other city on the server has.
I think that it would benefit Dis greatly to have a gem scale added either in the main area or in one of the mercantile buildings, and perhaps a jewelry merchant could be added somewhere nearby.
(edit:) I remembered that there already is a jewelry merchant, however he does not currently purchase from jewelry boxes which could be a nice addition.
