Rarefied Bluespirit Gunblade

Taken all the way down to base materials, one Rarefied Bluespirit Gunblade is 3 crafting steps deep and needs 4 intermediates — Bluespirit Tile ×2, Manasilver Nugget ×1, Star Ruby ×1 and 1 other — which resolve to 6 distinct raw materials totalling 19 units, plus 43 crystals.

That bill outweighs 7,589 of the 13,602 recipes tracked here and 804 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 13 of those crystals go into the final step; the other 30 are burned by the intermediates, so the real crystal cost is 21 Fire Crystal, 11 Wind Crystal, 6 Earth Crystal and 1 other kind.

The chain crosses two disciplines — Blacksmith to Lv 76 and Goldsmith to Lv 74 — 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, Manasilver Nugget has the widest use: 83 recipes call for it, spanning seven of the eight crafting classes.