Deepgold Cuirass of Fending

Taken all the way down to base materials, one Deepgold Cuirass of Fending is 3 crafting steps deep and needs 5 intermediates — Deepgold Nugget ×2, Bright Linen Cloth ×1, Oroshigane Ingot ×1 and 2 others — which resolve to 6 distinct raw materials totalling 24 units, plus 39 crystals.

That bill outweighs 8,926 of the 13,602 recipes tracked here and 881 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 11 of those crystals go into the final step; the other 28 are burned by the intermediates, so the real crystal cost is 16 Fire Crystal, 6 Ice Crystal, 6 Lightning Crystal and 2 other kinds.

The chain crosses four disciplines — Armorer to Lv 71, Blacksmith to Lv 71, Goldsmith to Lv 71 and Weaver to Lv 71 — so no single class can finish it unaided.

All 6 raw materials are gathered, 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, Oroshigane Ingot has the widest use: 114 recipes call for it, spanning six of the eight crafting classes.