Ironworks Ring of Gathering ★★★

Taken all the way down to base materials, one Ironworks Ring of Gathering is 2 crafting steps deep and needs 3 intermediates — Eikon Iron Ingot ×2, Celestine ×1 and Luminous Fiber ×1 — which resolve to 10 distinct raw materials totalling 33 units, plus 21 crystals.

That bill outweighs 10,907 of the 13,602 recipes tracked here and 1,755 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 16 are burned by the intermediates, so the real crystal cost is 10 Wind Cluster, 7 Fire Cluster, 2 Lightning Cluster and 1 other kind.

The chain crosses two disciplines — Goldsmith to Lv 60 and Alchemist to Lv 60 — so no single class can finish it unaided.

4 of the 10 raw materials come out of the ground, and 3 of them are time-gated: Crystallized Sap (8:00, 20:00), Meteorite (8:00, 20:00) and 1 other. The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Eikon Iron Ingot has the widest use: 140 recipes call for it, spanning seven of the eight crafting classes.