Manganese Syrinxi

Taken all the way down to base materials, one Manganese Syrinxi is 3 crafting steps deep and needs 4 intermediates — Blue Zircon ×2, Manganese Ingot ×2, Phrygian Gold Ingot ×1 and 1 other — which resolve to 6 distinct raw materials totalling 36 units, plus 80 crystals.

That bill outweighs 11,383 of the 13,602 recipes tracked here and 1,827 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 16 of those crystals go into the final step; the other 64 are burned by the intermediates, so the real crystal cost is 56 Wind Crystal and 24 Fire Crystal.

The chain crosses two disciplines — Goldsmith to Lv 86 and Blacksmith to Lv 86 — so no single class can finish it unaided.

All 6 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Manganese Ingot has the widest use: 134 recipes call for it, spanning seven of the eight crafting classes.