Throne

Throughout the dungeon, you will see "Jewel Encrusted Thrones" Youc an try to pry the gems off of them. There is a chance you can get one to 8 gems from a throne, depending on how much open space is around it. The most I've gotten, however, is six. If you have a vaporize rock spell (or fireball/lightning) you can try to knock the walls down from around throne before you pry the gems. Of course, there's also a chance that the gnome king (k) will appear. These guys are VERY TOUGH to kill. On higher difficulties you can't even take them out with a pulverization scroll. One trick you can try, is if you have a hold monster scroll or a stealth scroll going, you can pry and then if the gnome king appears you can get away. They will be killed by a finger of death spell, a hit from the lance of death, or three to four lightning/fireballs. either way, if you choose to play throne lottery, beware.