Highland Stone Wall

Taken all the way down to base materials, one Highland Stone Wall is 3 crafting steps deep and needs 4 intermediates — Mortar ×15, Mythrite Ingot ×15, Distilled Water ×15 and 1 other — which resolve to 7 distinct raw materials totalling 235 units, plus 131 crystals.

That bill outweighs 13,579 of the 13,602 recipes tracked here and 2,210 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 11 of those crystals go into the final step; the other 120 are burned by the intermediates, so the real crystal cost is 95 Fire Crystal, 30 Water Shard and 6 Wind Crystal.

The chain crosses three disciplines — Goldsmith to Lv 60, Blacksmith to Lv 52 and Alchemist to Lv 20 — so no single class can finish it unaided.

All 7 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, Mortar has the widest use: 140 recipes call for it, spanning six of the eight crafting classes.