This is a piece of titanium aura quartz. That means that someone took a piece of regular quartz and put it in a vacuum chamber and electroplated a thin coating of titanium onto it, which gives the crystal that characteristic rainbow shine. This piece is only 1/2 coated, leaving the natural base of the rock exposed.
Promotes inner strength; Grounding; Energizing.
Piece measures approximately 4.1 x 3.8 x 4.7cm.