When you get past the Khosoni Labrynth (around level 12), you should have a chance against the Fire Imps. These are found in encounters on the world map on a hill to the left of the Lenele gate (the name of place is Forest Night). The Fire Imps give around 250 XP and sometimes drop Garnets or Citrines. Garnets are valued at 10,000 and Citrines are about the same. These can be sold to a merchant in Khosoni. The Fire Imp stats are:

Lvl: 12
HP: 225
Dmg: 10
Prot: 32
Mag Res: 24
Weak to Ice, Strong to Fire.