How to make Gil without Crafting

Easiest way to gather a group, I usually do it with 4 dependable people, but can go up to 8. Do Aqua treasure dungeon fast gill, items you can sell ect. range a tank and a good healer make it fast. Range just because its easier to avoid group aoes. depending on your luck, items drops, mobs, can easy make at least 100k-200k in gill alone if you reach bottom floor. 8 floor total. You can trade GC for crafting items and sell them otherwise. IF you have airship access buff it up for retrial of crafting items to be traded for sand that relics use. They sell really well. Send retainers, depending on levels, to gather items and sell those as well. If done properly you can easy clear 1-5mill in a couple of hours. with the exception of wait time on airships.

Something of note about the treasure maps everyone's been suggesting: While the loot is on a per-map basis, the gil is per PERSON. This is partly why you'll see a lot of parties for dragonskin maps (current highest tier), that multiplied gil means more money for everyone if everyone brings a map.