Chromite Greatsword ★★

Taken all the way down to base materials, one Chromite Greatsword is 3 crafting steps deep and needs 7 intermediates — Chromite Ingot ×3, Grade 2 Reisui of Vitality ×3, Gazelle Leather ×1 and 4 others — which resolve to 15 distinct raw materials totalling 62 units, plus 54 crystals.

That bill outweighs 13,194 of the 13,602 recipes tracked here and 1,842 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 50 are burned by the intermediates, so the real crystal cost is 15 Fire Crystal, 10 Fire Cluster, 8 Earth Cluster and 6 other kinds.

The chain crosses four disciplines — Blacksmith to Lv 70, Alchemist to Lv 70, Goldsmith to Lv 70 and Leatherworker to Lv 68 — so no single class can finish it unaided.

10 of the 15 raw materials come out of the ground, and 3 of them are time-gated: Chromite Ore (10:00, 22:00), Hallowed Basil (6:00, 18:00) and 1 other. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Palladium Nugget has the widest use: 129 recipes call for it, spanning seven of the eight crafting classes.