Quartz with Rutile inclusions, 6-cm specimen. From Neroika Mt., Subpolar Urals, Russia.
<a href="//commons.wikimedia.org/wiki/User:VikSl" title="User:VikSl">VikSl</a>.  Exhibit from my own collection. My photo (Viktor Slyotov) from my site <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>