Hamlet Digger's Helmet ★

Taken all the way down to base materials, one Hamlet Digger's Helmet is 2 crafting steps deep and needs 2 intermediates — Darksteel Nugget ×2 and Rose Gold Nugget ×1 — which resolve to 3 distinct raw materials totalling 10 units, plus 14 crystals.

That bill outweighs 5,754 of the 13,602 recipes tracked here and 540 of the 1,441 Armorer ones, and 4,464 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 9 are burned by the intermediates, so the real crystal cost is 6 Fire Crystal, 3 Ice Crystal, 3 Wind Crystal and 1 other kind.

The chain crosses three disciplines — Armorer to Lv 50, Blacksmith to Lv 50 and Goldsmith to Lv 50 — so no single class can finish it unaided.

All 3 raw materials are gathered, and 2 of them are time-gated: Darksteel Ore (1:00) and Gold Ore (9:00). The widest gap between consecutive opening times is 16 Eorzean hours, about 47 real-world minutes.

Of the intermediates, Rose Gold Nugget has the widest use: 179 recipes call for it, spanning seven of the eight crafting classes.