Highland Mansion Wall (Composite)

Taken all the way down to base materials, one Highland Mansion Wall (Composite) is 3 crafting steps deep and needs 6 intermediates — Clear Glass Lens ×15, Firebricks ×15, Mythrite Ingot ×15 and 3 others — which resolve to 10 distinct raw materials totalling 310 units, plus 260 crystals.

That bill outweighs 13,593 of the 13,602 recipes tracked here and 1,590 of the 1,591 Alchemist ones, and 337 recipes nest deeper.

Only 40 of those crystals go into the final step; the other 220 are burned by the intermediates, so the real crystal cost is 90 Fire Crystal, 90 Water Shard, 40 Wind Crystal and 2 other kinds.

The chain crosses three disciplines — Alchemist to Lv 60, Carpenter to Lv 54 and Blacksmith to Lv 52 — so no single class can finish it unaided.

All 10 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, Mythrite Nugget has the widest use: 102 recipes call for it, spanning seven of the eight crafting classes.