Islewolf Ring of Casting

Taken all the way down to base materials, one Islewolf Ring of Casting is 2 crafting steps deep and needs 1 intermediate — Stonegold Nugget ×1 — which resolves to 3 distinct raw materials totalling 6 units, plus 17 crystals.

That bill outweighs 4,542 of the 13,602 recipes tracked here and 643 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 11 of those crystals go into the final step; the other 6 are burned by the intermediates, so the real crystal cost is 12 Wind Crystal and 5 Fire Crystal.

Every step is Goldsmith work, from a Lv 71 intermediate up to the Lv 71 finish, so one class covers the whole chain.

2 of the 3 raw materials come out of the ground, 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.