Carbuncle Chronometer ★★★

Taken all the way down to base materials, one Carbuncle Chronometer is 3 crafting steps deep and needs 5 intermediates — Mythril Ingot ×5, Rose Gold Nugget ×5, Cobalt Rivets ×4 and 2 others — which resolve to 7 distinct raw materials totalling 49 units, plus 81 crystals.

That bill outweighs 12,749 of the 13,602 recipes tracked here and 2,059 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 78 are burned by the intermediates, so the real crystal cost is 60 Fire Shard, 15 Wind Crystal, 4 Wind Cluster and 1 other kind.

The chain crosses two disciplines — Goldsmith to Lv 50 and Blacksmith to Lv 43 — so no single class can finish it unaided.

6 of the 7 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.