These rather special  Hematite tumbled stones

are Medium size

Hematite is Silver-gray metallic and is an iron ore which is iron oxide usually FeO2. it is one of the most grounding of all stones, it reduces stress and combats insomnia. It is said to help increase courage, concentrate energy and strengthen the heart. It is very beneficial to those attracted to it, but it is one of those stones that you either love or hate.