Exarchic Earrings of Healing ★★★★

Taken all the way down to base materials, one Exarchic Earrings of Healing is 2 crafting steps deep and needs 4 intermediates — Dwarven Mythril Nugget ×1, Grade 4 Mind Alkahest ×1, Silver Beech Lumber ×1 and 1 other — which resolve to 10 distinct raw materials totalling 24 units, plus 31 crystals.

That bill outweighs 8,926 of the 13,602 recipes tracked here and 1,346 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 25 are burned by the intermediates, so the real crystal cost is 9 Wind Cluster, 7 Wind Crystal, 6 Fire Cluster and 3 other kinds.

The chain crosses three disciplines — Goldsmith to Lv 80, Alchemist to Lv 80 and Carpenter to Lv 80 — so no single class can finish it unaided.

6 of the 10 raw materials come out of the ground, and 3 of them are time-gated: Hard Water (4:00, 16:00), Silver Beech Log (6:00, 18:00) and 1 other. The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Of the intermediates, Dwarven Mythril Nugget has the widest use: 154 recipes call for it, spanning seven of the eight crafting classes.