Metal Worm Jar

Taken all the way down to base materials, one Metal Worm Jar is 2 crafting steps deep and needs 2 intermediates — Deepgold Ingot ×2 and Stonegold Ingot ×2 — which resolve to 3 distinct raw materials totalling 20 units, plus 28 crystals.

That bill outweighs 7,876 of the 13,602 recipes tracked here and 851 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 14 Fire Crystal, 12 Wind Crystal and 2 Earth Crystal.

The chain crosses two disciplines — Blacksmith to Lv 73 and Goldsmith to Lv 72 — so no single class can finish it unaided.

All 3 raw materials are gathered, and one of them is time-gated: Gold Ore (9:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Stonegold Ingot has the widest use: 52 recipes call for it, spanning six of the eight crafting classes.