Sodalite brings calm and clarity to the mind. It has been said to soothe and reduce inflammation in the extremities, legs, face, and arms, including inflammation caused by headaches and migraine attacks.  It is associated with the throat chakra, making it a stone of authenticity and truth. It is also associated with the third eye chakra as it brings a soothing clarity which is beneficial for meditation and visualization practices.
 
Clear Quartz promotes clarity and is complimentary to many stones as it holds a frequency that energizes other crystals' properties as well as the person's.
 
With this combination, the role of clear Quartz is to increase the frequency (the calming properties) of sodalite to enhance peace and tranquillity.