Scintillant Ingot ★★★★

Taken all the way down to base materials, one Scintillant Ingot is 2 crafting steps deep and needs 1 intermediate — Platinum Ingot ×1 — which resolves to 4 distinct raw materials totalling 16 units, plus 10 crystals.

That bill outweighs 6,959 of the 13,602 recipes tracked here and 1,002 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 4 are burned by the intermediates, so the real crystal cost is 5 Fire Cluster and 5 Wind Cluster.

Every step is Goldsmith work, from a Lv 50 intermediate up to the Lv 60 finish, so one class covers the whole chain.

2 of the 4 raw materials come out of the ground, and 2 of them are time-gated: Luminium Ore (6:00, 18:00) and Platinum Ore (4:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Scintillant Ingot is itself consumed by 41 further recipes, spanning six of the eight crafting classes.