Copper Rings

Taken all the way down to base materials, one Copper Rings is 2 crafting steps deep and needs 1 intermediate — Copper Ingot ×1 — which resolves to 1 distinct raw material totalling 3 units, plus 2 crystals.

That bill outweighs 3,373 of the 13,602 recipes tracked here and 451 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

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

Every step is Goldsmith work, from a Lv 1 intermediate up to the Lv 4 finish, so one class covers the whole chain.

Its single raw material is gathered, and no spot for it is timed, so nothing in the tree waits on the Eorzean clock.

Copper Rings is itself consumed by 2 further recipes, all of them Goldsmith recipes.