Astral Silk ★★

Taken all the way down to base materials, a batch of 3 Astral Silk is 2 crafting steps deep and needs 2 intermediates — Crawler Silk ×2 and Astral Oil ×1 — which resolve to 7 distinct raw materials totalling 16 units, plus 12 crystals.

That bill outweighs 6,959 of the 13,602 recipes tracked here and 860 of the 1,968 Weaver ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 8 are burned by the intermediates, so the real crystal cost is 5 Lightning Crystal, 3 Lightning Cluster, 2 Water Cluster and 1 other kind.

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

4 of the 7 raw materials come out of the ground, and 3 of them are time-gated: Astral Moraine (0:00, 12:00), Seventh Heaven (4:00, 16:00) and 1 other. The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Astral Silk is itself consumed by 42 further recipes, spanning four of the eight crafting classes.