Living Arch ★★

Taken all the way down to base materials, one Living Arch is 2 crafting steps deep and needs 2 intermediates — Cut Stone ×20 and Growth Formula Zeta ×3 — which resolve to 6 distinct raw materials totalling 88 units, plus 79 crystals.

That bill outweighs 13,437 of the 13,602 recipes tracked here and 2,173 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 75 are burned by the intermediates, so the real crystal cost is 60 Wind Shard, 15 Water Crystal, 2 Fire Cluster and 1 other kind.

The chain crosses two disciplines — Goldsmith to Lv 60 and Alchemist to Lv 58 — so no single class can finish it unaided.

4 of the 6 raw materials come out of the ground, and 2 of them are time-gated: Red Quartz (10:00, 22:00) and Seventh Heaven (4:00, 16:00). The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Cut Stone has the widest use: 103 recipes call for it, spanning six of the eight crafting classes.