Each terrarium is unique and lovingly created in our shop. Includes live moss, rocks, sand, air plant and a sodalite crystal. Designs may vary 3″ glass cube Yellow Calcite Energy Properties: Motivates, promotes hope and confidence and moves out negative energy. Air plants are easy to maintain! Simply water them once a week by soaking in a bowl of water for 10 minutes. Shake excess water and allow to dry on a towel before placing back in terrarium.