a Sablevein stonewalker  

I slew 100 Sablevein Stonewalkers with the following results: 22% dropped a Fragment of Terrain, 2% dropped an Advanced Artisan 4 crafting book, 2% dropped a Ground Stone, 4% dropped Elemental pieces (2 essence wells, 1 summoned core, and 1 fascination rune), 4% dropped Treasure Chests which contained a Wellspring Choker, 1 Wellspring Sash, 1 Wellspring Ring, and 1 Wellspring Belt. They also dropped 1 Exsquisite Chest! It contained a Defense (Master I)!