Rarefied High Durium Milpreves

Taken all the way down to base materials, one Rarefied High Durium Milpreves is 3 crafting steps deep and needs 4 intermediates — Ametrine ×2, Dwarven Mythril Nugget ×1, High Durium Nugget ×1 and 1 other — which resolve to 6 distinct raw materials totalling 25 units, plus 62 crystals.

That bill outweighs 9,313 of the 13,602 recipes tracked here and 1,507 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 15 of those crystals go into the final step; the other 47 are burned by the intermediates, so the real crystal cost is 47 Wind Crystal and 15 Fire Crystal.

The chain crosses two disciplines — Goldsmith to Lv 81 and Blacksmith to Lv 81 — 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, Dwarven Mythril Nugget has the widest use: 154 recipes call for it, spanning seven of the eight crafting classes.