Aetherial Lens

Taken all the way down to base materials, one Aetherial Lens is 2 crafting steps deep and needs 3 intermediates — Almasty Serge ×1, Luncheon Toad Leather ×1 and Palm Lumber ×1 — which resolve to 4 distinct raw materials totalling 14 units, plus 39 crystals.

That bill outweighs 6,557 of the 13,602 recipes tracked here and 823 of the 1,968 Weaver ones, and 4,464 recipes nest deeper.

Only 15 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 16 Lightning Crystal, 15 Wind Crystal and 8 Earth Crystal.

The chain crosses three disciplines — Weaver to Lv 83, Carpenter to Lv 82 and Leatherworker to Lv 82 — so no single class can finish it unaided.

2 of the 4 raw materials match a gathering node, none of them timed; the other 2 come from vendors, drops or content this site does not track.

Of the intermediates, Luncheon Toad Leather has the widest use: 88 recipes call for it, spanning seven of the eight crafting classes.