Ironworks Necklace of Gathering ★★★

Taken all the way down to base materials, one Ironworks Necklace of Gathering is 3 crafting steps deep and needs 4 intermediates — Eikon Leather ×1, Luminous Fiber ×1, Treated Camphorwood Lumber ×1 and 1 other — which resolve to 12 distinct raw materials totalling 21 units, plus 23 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 815 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 18 are burned by the intermediates, so the real crystal cost is 8 Wind Cluster, 4 Ice Cluster, 4 Lightning Cluster and 2 other kinds.

The chain crosses three disciplines — Carpenter to Lv 60, Alchemist to Lv 60 and Leatherworker to Lv 60 — so no single class can finish it unaided.

5 of the 12 raw materials come out of the ground, and 4 of them are time-gated: Crystallized Sap (8:00, 20:00), Meteorite (8:00, 20:00) and 2 others. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Treated Camphorwood Lumber has the widest use: 92 recipes call for it, spanning five of the eight crafting classes.