Excellent adjudication; logical and consistent with the RAW.Pyrex said:Take the gem you've got, use it as raw materials for a craft check, make your craft check every week and triple the value of the gem.
I agree with this. An uncut gem is (at least partially) the raw material required for Craft (Jeweler).Patryn of Elvenshae said:A cut gem's value is what it is.
An uncut gem's value is ~1/3 of what it would be if you were to cut and polish it; use it as the raw materials cost for that particular Craft skill (note that I'd never use Craft (Gemcutter); I'd just subsume it into Craft (Jeweler)).

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.