True Staurolite easily scratches glass. Staurolite is an extremely hard, insoluble mineral formed from iron magnesium aluminum silicate embedded in a matrix of schist, mica & muscavite which is what makes it sparkle. The name Staurolite comes from the Greek words stauros (cross) and lithos (stone) meaning stone of the cross. On this page, you will find Staurolite Jewelry and small and large pieces which are each unique with magical healing properties!