Aurum Regis Creasing Knife

Taken all the way down to base materials, one Aurum Regis Creasing Knife is 3 crafting steps deep and needs 6 intermediates — Aurum Regis Nugget ×2, Hardsilver Ingot ×1, Scale Glue ×1 and 3 others — which resolve to 12 distinct raw materials totalling 40 units, plus 36 crystals.

That bill outweighs 11,825 of the 13,602 recipes tracked here and 1,447 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 33 are burned by the intermediates, so the real crystal cost is 19 Wind Crystal, 9 Fire Crystal, 5 Water Crystal and 2 other kinds.

The chain crosses three disciplines — Blacksmith to Lv 60, Alchemist to Lv 59 and Goldsmith to Lv 58 — so no single class can finish it unaided.

9 of the 12 raw materials come out of the ground, and one of them is time-gated: Gold Ore (9:00). That window comes round once per Eorzean day, every 70 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.