Carbuncle Lantern ★★★

Taken all the way down to base materials, one Carbuncle Lantern is 2 crafting steps deep and needs 3 intermediates — Hippogryph Leather ×2, Rose Gold Nugget ×2 and Ruby ×1 — which resolve to 8 distinct raw materials totalling 21 units, plus 18 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 1,199 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 15 are burned by the intermediates, so the real crystal cost is 6 Earth Crystal, 6 Wind Crystal, 4 Wind Cluster and 1 other kind.

The chain crosses two disciplines — Goldsmith to Lv 50 and Leatherworker to Lv 50 — so no single class can finish it unaided.

4 of the 8 raw materials come out of the ground, and 2 of them are time-gated: Gold Ore (9:00) and Raw Ruby (18:00). The widest gap between consecutive opening times is 15 Eorzean hours, about 44 real-world minutes.

Of the intermediates, Rose Gold Nugget has the widest use: 179 recipes call for it, spanning seven of the eight crafting classes.