So, here's the scoop on Celestite:
Celestite, a beautiful translucent royal blue crystal, is highly prized by energy workers, crystal healers and meditators. Metaphysical rockhounds say that celestite helps synchronize the egoistic mind with higher aspects of your Divine Nature. Celestite is said to promote mental balance -- a peaceful, tranquil mental state. Celestite is said to facilitate clairaudient communication with the angelic realms and with your Spiritual Guides and Teachers.
Celestite can elevate the energy within its environment. According to: "Love is in the Earth: A Kaleidoscope of Crystals", "blue celestite seems to cleanse the area of affectation, transmuting pain and chaos into light and love."
Celestite is good for mental activities. Celestite can synchronize the egoistic mind with higher aspects of your Divine Nature, promoting mental balance and helping you to achieve a peaceful, tranquil mental state. This blue crystal always imparts a feeling of well being. It can help in cultivating a more intense spiritual practice, and can be a powerful tool supporting the diligent work involved in attaining the highest spiritual goals.
Celestite has "stories to tell". It can provide for access to, and transfer of, information from the purity of the angelic realms. It assists in clairaudient endeavors, affording lucid, distinct, and articulate verbalization of the messages received. It also contains an innate wisdom which is accessible to the user... It is a stone for astral travel... it is a bright hope in days of despair...inhabited by the fairy of good fortune..
~via Feathers And Bones