With this spell the caster could transform raw ore into fine ingots of pure metal. Smelting took 30 minutes to cast and the effects were permanent. The results of the spell depended greatly on the initial quality of ore. The following yields could be expected:
- high-grade ore released 1 lb. (450 g) of metal per 10 lbs. (4.5 kg) of ore
- low-grade ore released 1 lb. of metal per 100 (450 kg) or possibly even 1,000 lbs (4,500 kg) of ore
Gems or semi-precious stones were unaffected by this spell. The spell would fail if cast upon rock that did not contain ore. Interrupting the spell at any point would cease the transformation process, but even successfully dispelling the magic would not cause the ingots to revert to their ore state. Smelting had no effect on metal or rock-based creatures.
This spell only required verbal and somatic components to cast.