Chrysolite

Taken all the way down to base materials, one Chrysolite is 2 crafting steps deep and needs 1 intermediate — Cloud Mica Whetstone ×1 — which resolves to 2 distinct raw materials totalling 6 units, plus 11 crystals.

That bill outweighs 4,542 of the 13,602 recipes tracked here and 643 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 5 are burned by the intermediates, so the real crystal cost is 11 Wind Crystal.

Every step is Goldsmith work, from a Lv 56 intermediate up to the Lv 60 finish, so one class covers the whole chain.

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

Chrysolite is itself consumed by 19 further recipes, spanning four of the eight crafting classes.