Furnace Ring ★★★

Taken all the way down to base materials, one Furnace Ring is 2 crafting steps deep and needs 1 intermediate — Basilisk Whetstone ×1 — which resolves to 3 distinct raw materials totalling 3 units, plus 8 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 3 of those crystals go into the final step; the other 5 are burned by the intermediates, so the real crystal cost is 5 Wind Shard, 2 Wind Cluster and 1 Fire Cluster.

Every step is Goldsmith work, from a Lv 40 intermediate up to the Lv 50 finish, so one class covers the whole chain.

1 of the 3 raw materials matches a gathering node, none of them timed; the other 2 come from vendors, drops or content this site does not track.

Of the intermediates, Basilisk Whetstone has the widest use: 55 recipes call for it, spanning two of the eight crafting classes.