Gemmaster's Gown ★★

Taken all the way down to base materials, one Gemmaster's Gown is 3 crafting steps deep and needs 6 intermediates — Astral Silk ×2, Aurum Regis Ingot ×1, Griffin Leather ×1 and 3 others — which resolve to 18 distinct raw materials totalling 58 units, plus 39 crystals.

That bill outweighs 13,061 of the 13,602 recipes tracked here and 1,926 of the 1,968 Weaver ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 35 are burned by the intermediates, so the real crystal cost is 15 Lightning Crystal, 8 Wind Cluster, 5 Lightning Cluster and 4 other kinds.

The chain crosses four disciplines — Weaver to Lv 60, Alchemist to Lv 60, Goldsmith to Lv 60 and Leatherworker to Lv 60 — so no single class can finish it unaided.

10 of the 18 raw materials come out of the ground, and 8 of them are time-gated: Astral Moraine (0:00, 12:00), Aurum Regis Ore (2:00, 14:00) and 6 others. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Aurum Regis Nugget has the widest use: 185 recipes call for it, spanning seven of the eight crafting classes.