Celestite - 'Heavenly stone' Provides a feeling of calm power, gives the sensation ]of security, encourages peaceful communication, represents the flow of life.
Cluster - All clusters are thought to have integrating energy that will bring back into balance with itself and correct any imbalances. Absorbs negative vibes in a room, keep a cluster in your workplace to bring people together, Great for use in home or a healing space. 
Egg - Could help fertility both natural and medical, instantly relives intense anxiety around conceiving a baby, attracters of abundance, good luck, this formation releases individual crystal energies steadily and over a long period of time.