Grade 2 Skybuilders' Stone

Taken all the way down to base materials, one Grade 2 Skybuilders' Stone is 2 crafting steps deep and needs 1 intermediate — Slate Whetstone ×1 — which resolves to 4 distinct raw materials totalling 18 units, plus 9 crystals.

That bill outweighs 7,380 of the 13,602 recipes tracked here and 1,038 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 3 are burned by the intermediates, so the real crystal cost is 7 Wind Crystal and 2 Fire Crystal.

Every step is Goldsmith work, from a Lv 61 intermediate up to the Lv 70 finish, so one class covers the whole chain.

1 of the 4 raw materials matches a gathering node, none of them timed; the other 3 come from vendors, drops or content this site does not track.

Of the intermediates, Slate Whetstone has the widest use: 33 recipes call for it, spanning two of the eight crafting classes.