Scintillant Earring of Slaying ★★★★

Taken all the way down to base materials, one Scintillant Earring of Slaying is 3 crafting steps deep and needs 6 intermediates — Scintillant Ingot ×2, Carnelian ×1, Diamond ×1 and 3 others — which resolve to 12 distinct raw materials totalling 48 units, plus 45 crystals.

That bill outweighs 12,691 of the 13,602 recipes tracked here and 2,043 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 39 are burned by the intermediates, so the real crystal cost is 15 Wind Cluster, 14 Fire Cluster, 10 Wind Crystal and 2 other kinds.

The chain crosses two disciplines — Goldsmith to Lv 60 and Alchemist to Lv 60 — so no single class can finish it unaided.

7 of the 12 raw materials come out of the ground, and 5 of them are time-gated: Luminium Ore (6:00, 18:00), Morel (4:00, 16:00) and 3 others. The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Of the intermediates, Platinum Ingot has the widest use: 176 recipes call for it, spanning seven of the eight crafting classes.