Tektite

Tektites are metric in origin, either coming strait from a meteor that fell to earth or being created from the impact of that meteor.  All tektites are very rare and each different type of tektite comes from a different location.   In addition, each tektite has different energetic properties associated with it, so its good to pay attention what you attached too.   One thing is for sure, these extra-teresstrial energies usually pack a punch and are often sought after for their specific properties and strong vibrations.