Ruby Ring ★★★

Taken all the way down to base materials, one Ruby Ring is 2 crafting steps deep and needs 2 intermediates — Gold Ingot ×2 and Ruby ×1 — which resolve to 7 distinct raw materials totalling 15 units, plus 12 crystals.

That bill outweighs 6,735 of the 13,602 recipes tracked here and 948 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 9 are burned by the intermediates, so the real crystal cost is 8 Wind Cluster and 4 Fire Cluster.

Every step is Goldsmith work, from a Lv 50 intermediate up to the Lv 50 finish, so one class covers the whole chain.

3 of the 7 raw materials come out of the ground, and 3 of them are time-gated: Gold Ore (9:00), Native Gold (4:00) and 1 other. The widest gap between consecutive opening times is 10 Eorzean hours, about 29 real-world minutes.

Of the intermediates, Gold Ingot has the widest use: 184 recipes call for it, spanning seven of the eight crafting classes.