Chiastolite is a a form of andalusite which occurs in the form of stout crystals, exhibiting the axis and angles in a different color from the rest and producing a colored cross.  The "cross-stone" was, in yesteryear, associated with deflection of the "evil eye".  Chiastolite is a powerfully protective stone.  In ancient times it was used to ward off ill wishing and curses.  It is now used as a sign of devotion, especially, devotion toward awareness, which can, in itself, dispel negativity.  It has the property of transmuting dissension into harmony.  This is a creative stone with the power to dispel negative thoughts and feelings.  It transmutes conflict into harmony and aids problem-solving and change. 

This Stone is 2" H x 1 3/4" W x1/4" Thick

This information above comes from Judy Hall "The Crystal BIble and Melody "Love is in the Earth.