Island Prism ★★

Taken all the way down to base materials, a batch of 3 Island Prism is 2 crafting steps deep and needs 1 intermediate — Pewter Ingot ×3 — which resolves to 3 distinct raw materials totalling 20 units, plus 30 crystals.

That bill outweighs 7,876 of the 13,602 recipes tracked here and 1,141 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 24 Wind Crystal, 3 Fire Cluster and 3 Wind Cluster.

Every step is Goldsmith work, from a Lv 82 intermediate up to the Lv 90 finish, so one class covers the whole chain.

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

Of the intermediates, Pewter Ingot has the widest use: 63 recipes call for it, spanning six of the eight crafting classes.