Iron meteorite, Octahedrite with Widmanstätten patterns, Gibeon, Southwest Africa, 1836; Staatliches Museum für Naturkunde Karlsruhe, Germany. Iron is used in homeopathy as remedy: Ferrum metallicum (Ferr.)
<a href="//commons.wikimedia.org/wiki/User:Llez" title="User:Llez">H. Zell</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>