Thaumaturge Is Magic

One allowance here buys 25,250 EXP, which places it 2nd of the 6 Lv 25 Goldsmith tradecraft leves that record EXP — a figure 2 other leves on the rung match exactly. The best of them, Keep the Change, returns 36,390 EXP for the same allowance, 44% more.

Across that rung the return runs from 18,490 EXP to 36,390 EXP per allowance — 4 distinct figures spanning 97%, so the wrong pick leaves 17,900 EXP of the allowance unspent.

On whether to wait: the best Lv 30 Goldsmith tradecraft leve returns 67,730 EXP per allowance, 86% more than the best on this rung, while the Lv 20 rung behind tops out at 21,600 EXP.

At Lv 25 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 31,772 EXP per allowance, the 4 Fieldcraft ones 204,269 EXP, which puts this leve 21% below its own category's average.

Gil ranks it differently: 252 gil per allowance is 6th of 6 on the same rung against 2nd on EXP, with the best there paying 485 gil.

Fluorite Ring ×1 is a Lv 28 Goldsmith recipe, 2 steps deep through 2 intermediates, costing 4 units of raw material and 8 crystals.

Handing that in returns 6,313 EXP and 63 gil for every unit of raw material the order swallows.