HQ jewelry can be sold nicely already on low levels. You won't make a fortune per item but it is easy to HQ a Goldsmith craft item if you are well equipped.

Another slow but good income is the combination of miner and Goldsmith. Miner gathers gold ore from unspoiled nodes, Goldsmith crafts the gold-nugget from it. NQ sells for 1,5k and is really not a big hazzle to craft.

Also any job gear the Goldsmith can craft (1 Star items) sells for several thousands, also in NQ. You need some patience because there aren't dozens of players hitting 50 on their job anymore everyday but from my experiences, you can always sell them sooner or later.