Highland Mansion Roof (Stone)

Taken all the way down to base materials, one Highland Mansion Roof (Stone) is 3 crafting steps deep and needs 7 intermediates — Cobalt Joint Plate ×20, Mortar ×20, Cut Stone ×15 and 4 others — which resolve to 10 distinct raw materials totalling 300 units, plus 380 crystals.

That bill outweighs 13,591 of the 13,602 recipes tracked here and 1,437 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 40 of those crystals go into the final step; the other 340 are burned by the intermediates, so the real crystal cost is 100 Fire Shard, 100 Ice Shard, 55 Water Shard and 4 other kinds.

The chain crosses four disciplines — Armorer to Lv 60, Blacksmith to Lv 54, Goldsmith to Lv 30 and Alchemist to Lv 20 — 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, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.