Breccian dwarves' aetherial power allows them to work stone and metal, survive in the arid rocky regions, and have stoneskin if they are strong. Their resonant powers allow them to know their enemies, to hunt and track, and to gain strength from revenge. If they have too much resonance, they are overwhelmed with it and go on killing sprees.

All dwarves are known for their steady feet, their inborn toughness, and their shrewdness.

Breccian dwarven society is vicious, brutal, and hateful. No two families trust each other, no two communities like each other. There are no alliances, no support structures, no friendships. Only grudges and violence. They live in small families that only keep together for protection. The young are raised to distrust strangers and rely on their parents, who view them as servants and burdens.

The thane of the breccian dwarves is the meanest, most powerful, most violent dwarf in the nation. The thane's family keeps slaves and controls other families, and an intricate system of vendettas keeps them at war with other dwarven families. Power changes hands often. The crafts are used to gain and sustain power more than for their own sake.