Healing Properties: Hackmanite is a rare sulfur-rich variety of Sodalite. An interesting fact about this crystal is that it can change color when exposed to sunlight. It has a color ranging from pale to deep violet. And when you place the crystal in the sun, it can shift to gray or green colors. But beyond being pretty, it has some powerful properties to offer.ers, supports self-love, heals inner-child wounds, and relieves anxiety and stress.