Gem Quality kyanite is often
mistaken for good quality blue sapphire, but the major difference
between the two is the durability of kyanite. It is a much softer
stone and is prone to wear if used as a ring stone. It is an aluminium
silicate, the same chemical combination as andalusite, but again it is
a very different stone.
supposed to be ideal for calming the mind and getting rid of spiritual