Riviera Wall Shelf

Taken all the way down to base materials, one Riviera Wall Shelf is 3 crafting steps deep and needs 3 intermediates — Cobalt Ingot ×6, Cobalt Rivets ×4 and Rosewood Lumber ×2 — which resolve to 3 distinct raw materials totalling 24 units, plus 73 crystals.

That bill outweighs 8,926 of the 13,602 recipes tracked here and 904 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 11 of those crystals go into the final step; the other 62 are burned by the intermediates, so the real crystal cost is 50 Fire Shard, 18 Wind Shard and 5 Ice Shard.

The chain crosses two disciplines — Carpenter to Lv 46 and Blacksmith to Lv 43 — so no single class can finish it unaided.

All 3 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.