Riviera Half Partition

Taken all the way down to base materials, one Riviera Half Partition is 2 crafting steps deep and needs 2 intermediates — Elm Lumber ×3 and Yew Lumber ×3 — which resolve to 2 distinct raw materials totalling 18 units, plus 11 crystals.

That bill outweighs 7,380 of the 13,602 recipes tracked here and 740 of the 1,552 Carpenter ones, and 4,464 recipes nest deeper.

Only 2 of those crystals go into the final step; the other 9 are burned by the intermediates, so the real crystal cost is 10 Wind Shard and 1 Ice Shard.

Every step is Carpenter work, so one class covers the whole chain.

One intermediate outranks the result: Yew Lumber is a Lv 21 Carpenter recipe feeding a Lv 20 craft, so that step, not the last one, is the real gate.

Both raw materials are gathered, and no spot for either is timed, so nothing in the tree waits on the Eorzean clock.