Iridescent Hat of Striking

Taken all the way down to base materials, one Iridescent Hat of Striking is 3 crafting steps deep and needs 2 intermediates — Iridescent Silk ×2 and Iridescent Silk Thread ×9 — which resolve to 3 distinct raw materials totalling 16 units, plus 27 crystals.

That bill outweighs 6,959 of the 13,602 recipes tracked here and 860 of the 1,968 Weaver ones, and 337 recipes nest deeper.

Only 12 of those crystals go into the final step; the other 15 are burned by the intermediates, so the real crystal cost is 21 Lightning Crystal and 6 Wind Crystal.

Every step is Weaver work, from a Lv 72 intermediate up to the Lv 72 finish, so one class covers the whole chain.

All 3 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Iridescent Silk has the widest use: 36 recipes call for it, spanning four of the eight crafting classes.