[Lilani]

I'm 35 and I'm making a nice profit off of desynthesizing silver earrings at that jewelry shop in Lower Jeuno. Just buy a bunch of lightning crystals (at least 2 stacks or 2 clusters) and have plenty of inventory space before you go up there. I usually buy 5 or 6 earrings, desynth those, and buy some more.

But be sure to watch your direction, the elemental day, and the moon phase well, because if one of those is opposing you you might not get good success rates at this level. But on good days I can put out silver ingots like crazy and make major gil. On Fairy they tend to go for 50k-60k a stack, and I usually put about 20k into it to make a stack (unless the crystal farmers are being greedy or it's a bad day). And remember: earrings are much easier to desynth than rings, and you can still HQ them to get 2 ingots instead of 1.

And at higher levels you can do mythril, which I'm sure has a higher profit margin.