Riviera Stone Chimney

Taken all the way down to base materials, one Riviera Stone Chimney is 3 crafting steps deep and needs 4 intermediates — Cut Stone ×4, Firebricks ×4, Mortar ×2 and 1 other — which resolve to 6 distinct raw materials totalling 32 units, plus 28 crystals.

That bill outweighs 10,750 of the 13,602 recipes tracked here and 1,738 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 8 of those crystals go into the final step; the other 20 are burned by the intermediates, so the real crystal cost is 16 Wind Shard, 8 Water Shard and 4 Fire Shard.

The chain crosses two disciplines — Goldsmith to Lv 37 and Alchemist to Lv 20 — so no single class can finish it unaided.

All 6 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.