Oasis Cobble Flooring

Taken all the way down to base materials, one Oasis Cobble Flooring is 3 crafting steps deep and needs 4 intermediates — Mortar ×4, Clinker Bricks ×3, Cut Stone ×2 and 1 other — which resolve to 7 distinct raw materials totalling 37 units, plus 38 crystals.

That bill outweighs 11,564 of the 13,602 recipes tracked here and 1,852 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 9 of those crystals go into the final step; the other 29 are burned by the intermediates, so the real crystal cost is 23 Water Shard, 11 Wind Shard and 4 Fire Shard.

The chain crosses two disciplines — Goldsmith to Lv 40 and Alchemist to Lv 39 — 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.