Adamantite Broadsword

Taken all the way down to base materials, one Adamantite Broadsword is 3 crafting steps deep and needs 6 intermediates — Adamantite Nugget ×2, Aurum Regis Nugget ×2, Amphiptere Leather ×1 and 3 others — which resolve to 13 distinct raw materials totalling 46 units, plus 48 crystals.

That bill outweighs 12,540 of the 13,602 recipes tracked here and 1,675 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 38 are burned by the intermediates, so the real crystal cost is 24 Fire Crystal, 10 Earth Crystal, 10 Wind Crystal and 1 other kind.

The chain crosses four disciplines — Blacksmith to Lv 58, Goldsmith to Lv 58, Leatherworker to Lv 58 and Alchemist to Lv 55 — so no single class can finish it unaided.

9 of the 13 raw materials come out of the ground, and 3 of them are time-gated: Adamantite Ore (0:00, 2:00, 6:00, 10:00, 12:00, 14:00, 18:00, 22:00), Darksteel Ore (1:00) and 1 other. The widest gap between consecutive opening times is 4 Eorzean hours, about 12 real-world minutes.

Of the intermediates, Aurum Regis Nugget has the widest use: 185 recipes call for it, spanning seven of the eight crafting classes.