You can find them in large numbers past the big stone bridge that is NE of Aegirhamm, levels 8-11 from what I've seen. They drop lots of little gems that sell for about 1 silver, and I've had one drop like 5 or 6 silver in cash for me. Good source of income for the newbie player like myself. :D
It dropped an Adroit H2H weapon, gave 6 to quick and 3 to strength, level 10 weapon...will post exact stats soon. It also dropped a nifty little leather tunic that gave 6 to quickness and 1 to mending skill, with an AF of like 18 or something. All are 89% Quality items.