Core Universal Master Stone of Psychic Development
For angelic communication, it is fantastic! Combine with apophyllite, and celestite/celestine for this purpose.
Spirituality, astral travel, harmony on many planes, telepathy, universal truth, Stone of Conscious Awareness, Fear of truth, and Oneness.
Environmental sized pieces (3+ inches) can be utilized to invoke the innate energies of this stone in a space.