Made from earth and minerals, it is still light. It looks like a cheap shield made from crude iron and petrified... dirt?

While having the shield equipped, you have advantage on Constitution saving throws against being poisoned or diseased.

Shields require the Utilize action to Don or Doff. You gain the Armor Class benefit of a Shield only if you have training with it.

Notes: Advantage: Constitution Saving Throws, Bonus: Armor Class, Combat, Warding