Durium Foil

Taken all the way down to base materials, one Durium Foil is 3 crafting steps deep and needs 5 intermediates — Durium Ingot ×2, Star Spinel ×2, Tama-hagane Ingot ×2 and 2 others — which resolve to 8 distinct raw materials totalling 44 units, plus 53 crystals.

That bill outweighs 12,337 of the 13,602 recipes tracked here and 1,982 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 9 of those crystals go into the final step; the other 44 are burned by the intermediates, so the real crystal cost is 31 Wind Crystal and 22 Fire Crystal.

The chain crosses two disciplines — Goldsmith to Lv 67 and Blacksmith to Lv 66 — so no single class can finish it unaided.

All 8 raw materials are gathered, and one of them is time-gated: Raw Star Spinel (0:00, 12:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Durium Nugget has the widest use: 142 recipes call for it, spanning seven of the eight crafting classes.