(aka Dumortierite Quartz). Blue quartz is one of the many forms of blue chalcedony.
Blue quartz is sometimes called dumortierite or dumortierite quartz. It is used to enhance organizational abilities, willpower and organization. It is a 5th or throat chakra stone. It balances the lower and upper triangle and both lower and higher chakras. It also encourages acceptance of reality and act on that reality in a positive way.