Darksteel Rivets ★

Taken all the way down to base materials, one Darksteel Rivets is 2 crafting steps deep and needs 1 intermediate — Darksteel Nugget ×1 — which resolves to 1 distinct raw material totalling 3 units, plus 6 crystals.

That bill outweighs 3,373 of the 13,602 recipes tracked here and 410 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 3 are burned by the intermediates, so the real crystal cost is 6 Fire Crystal.

Every step is Blacksmith work, from a Lv 50 intermediate up to the Lv 50 finish, so one class covers the whole chain.

The single raw material is gathered, and it is time-gated: Darksteel Ore (1:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Darksteel Rivets is itself consumed by 18 further recipes, spanning seven of the eight crafting classes.