Serpentskin Vest

Taken all the way down to base materials, one Serpentskin Vest is 3 crafting steps deep and needs 6 intermediates — Amphiptere Leather ×2, Chimerical Felt ×2, Crawler Silk ×1 and 3 others — which resolve to 11 distinct raw materials totalling 40 units, plus 41 crystals.

That bill outweighs 11,825 of the 13,602 recipes tracked here and 1,762 of the 1,844 Leatherworker ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 38 are burned by the intermediates, so the real crystal cost is 15 Lightning Crystal, 10 Earth Crystal, 9 Wind Crystal and 3 other kinds.

The chain crosses four disciplines — Leatherworker to Lv 60, Weaver to Lv 58, Goldsmith to Lv 56 and Alchemist to Lv 25 — so no single class can finish it unaided.

7 of the 11 raw materials come out of the ground, and one of them is time-gated: Silkworm Cocoon (1:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Crawler Silk has the widest use: 178 recipes call for it, spanning five of the eight crafting classes.