Iolite: great for meditation, promotes peaceful spiritual growth, helps you feel less scattered, helps calm emotions and still the mind, helps you connect with higher guides.
 
Clear Quartz: soothing and calming, brings peace and tranquility, can heal issues on all levels, amplifies the energies of other crystals.
 
Amethyst: stone of peace, meditative and calming, promotes balance and works in the emotional, spiritual, and physical planes to do so, eliminates impatience, great for meditating, clears the mind.