Slothskin Necklace of Gathering ★★★

Taken all the way down to base materials, one Slothskin Necklace of Gathering is 3 crafting steps deep and needs 4 intermediates — Ground Sloth Leather ×4, Hawk's Eye Sand ×1, Worsted Yarn ×1 and 1 other — which resolve to 10 distinct raw materials totalling 26 units, plus 20 crystals.

That bill outweighs 9,543 of the 13,602 recipes tracked here and 1,336 of the 1,844 Leatherworker ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 16 are burned by the intermediates, so the real crystal cost is 6 Earth Cluster, 6 Wind Cluster, 2 Lightning Cluster and 3 other kinds.

The chain crosses three disciplines — Leatherworker to Lv 70, Alchemist to Lv 70 and Weaver to Lv 66 — so no single class can finish it unaided.

3 of the 10 raw materials come out of the ground, and one of them is time-gated: Hawk's Eye (6:00, 18:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Worsted Yarn has the widest use: 66 recipes call for it, spanning three of the eight crafting classes.