Scintillant Ring of Healing ★★★★

Taken all the way down to base materials, one Scintillant Ring of Healing is 3 crafting steps deep and needs 4 intermediates — Gold Ingot ×2, Scintillant Ingot ×2, Grade 3 Mind Dissolvent ×1 and 1 other — which resolve to 11 distinct raw materials totalling 46 units, plus 38 crystals.

That bill outweighs 12,540 of the 13,602 recipes tracked here and 2,009 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 32 are burned by the intermediates, so the real crystal cost is 17 Wind Cluster, 15 Fire Cluster, 3 Lightning Cluster and 1 other kind.

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 11 raw materials come out of the ground, and 5 of them are time-gated: Luminium Ore (6:00, 18:00), Zeolite Ore (8:00, 20:00) and 3 others. The widest gap between consecutive opening times is 9 Eorzean hours, about 26 real-world minutes.

Of the intermediates, Gold Ingot has the widest use: 184 recipes call for it, spanning seven of the eight crafting classes.