Rarefied Adamantite Scutum

Taken all the way down to base materials, one Rarefied Adamantite Scutum is 3 crafting steps deep and needs 4 intermediates — Adamantite Nugget ×2, Amphiptere Leather ×1, Titanium Ingot ×1 and 1 other — which resolve to 8 distinct raw materials totalling 27 units, plus 35 crystals.

That bill outweighs 9,763 of the 13,602 recipes tracked here and 962 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 11 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 19 Fire Crystal, 10 Earth Crystal and 6 Ice Crystal.

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

7 of the 8 raw materials come out of the ground, and 2 of them are time-gated: Adamantite Ore (0:00, 2:00, 6:00, 10:00, 12:00, 14:00, 18:00, 22:00) and Darksteel Ore (1:00). The widest gap between consecutive opening times is 4 Eorzean hours, about 12 real-world minutes.

Of the intermediates, Titanium Nugget has the widest use: 112 recipes call for it, spanning six of the eight crafting classes.