Rutile Twin, 1cm. cristal with Qartz. Azerbaijan, Capudjuk mine
<a href="//commons.wikimedia.org/wiki/User:VikSl" title="User:VikSl">VikSl</a> - Exhibit from my own collection ( V.Slyotov, <a rel="nofollow" class="external free" href="http://mindraw.web.ru/">http://mindraw.web.ru/</a> )
CC BY 3.0
self-made, from <a rel="nofollow" class="external free" href="http://mindraw.web.ru/">http://mindraw.web.ru/</a>