Depending on the server you are on, the cinder ore quest can be a profitable way to make some money.
Search for cinder ore on the broker:
Blemished Cinder Ore
Chipped Cinder Ore
Marred Cinder Ore
Scuffed Cinder Ore
Shattered Cinder Ore
Search for Rare Stones:
Brume Stone
Cloud Stone
Dust Stone
Fey Stone
Murk Stone
Sky Stone
Wind Stone
I can purchase a full set of Cinder Ore for around 42 gold on my server, which I can then turn in to the collection person and receive a T7 Rare. I put that on the broker for around 1p - 2p and make a decent profit. I then make a new character and do the same thing.
Supposedly the rare stone collection quest also give a T7 Rare, but I have not found them cheap enough to be worth trying so I cannot verify this.
Works well.