Rarefied Deepgold Cuirass

Taken all the way down to base materials, one Rarefied Deepgold Cuirass is 3 crafting steps deep and needs 4 intermediates — Deepgold Nugget ×2, Bright Linen Cloth ×1, Stonegold Nugget ×1 and 1 other — which resolve to 4 distinct raw materials totalling 19 units, plus 36 crystals.

That bill outweighs 7,589 of the 13,602 recipes tracked here and 733 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 12 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 12 Fire Crystal, 6 Earth Crystal, 6 Ice Crystal and 2 other kinds.

The chain crosses four disciplines — Armorer to Lv 72, Blacksmith to Lv 71, Goldsmith to Lv 71 and Weaver to Lv 71 — so no single class can finish it unaided.

All 4 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, Stonegold Nugget has the widest use: 90 recipes call for it, spanning six of the eight crafting classes.