Adamant Codex ★★

Taken all the way down to base materials, one Adamant Codex is 2 crafting steps deep and needs 3 intermediates — Tungsten Steel Ingot ×3, Pliable Glass Fiber ×2 and Enchanted Dimythrite Ink ×1 — which resolve to 10 distinct raw materials totalling 42 units, plus 31 crystals.

That bill outweighs 12,044 of the 13,602 recipes tracked here and 1,479 of the 1,591 Alchemist ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 27 are burned by the intermediates, so the real crystal cost is 7 Water Crystal, 6 Earth Cluster, 6 Fire Cluster and 2 other kinds.

The chain crosses two disciplines — Alchemist to Lv 80 and Blacksmith to Lv 80 — so no single class can finish it unaided.

4 of the 10 raw materials come out of the ground, and 2 of them are time-gated: Sandalwood Sap (2:00, 14:00) and Tungsten Ore (10:00, 22:00). The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Of the intermediates, Tungsten Steel Ingot has the widest use: 113 recipes call for it, spanning six of the eight crafting classes.