Mythril Circlet (Tourmaline)

Taken all the way down to base materials, one Mythril Circlet (Tourmaline) is 2 crafting steps deep and needs 2 intermediates — Mythril Ingot ×3 and Tourmaline ×1 — which resolve to 2 distinct raw materials totalling 10 units, plus 27 crystals.

That bill outweighs 5,754 of the 13,602 recipes tracked here and 801 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 17 are burned by the intermediates, so the real crystal cost is 17 Fire Shard and 10 Wind Shard.

The chain crosses two disciplines — Goldsmith to Lv 42 and Blacksmith to Lv 38 — so no single class can finish it unaided.

Both raw materials are gathered, and no spot for either is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Mythril Ingot has the widest use: 135 recipes call for it, spanning seven of the eight crafting classes.