Picture of the Day 06/14/25 - Wikimedia Commons

Posted by Photogems • Profile • 06/14/25 at 12:16PM • Photography • See more by Photogems

Dioptase with calcite and minrecordite - Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia (5.5×4cm).

Didier Descouens, CC BY-SA 3.0, via Wikimedia Commons. View source.