If you don’t know about cacoxenite, you’re welcome. This cabochon is one of the best you’ll ever see. It sparkles in any lighting, hits from different angles, and even has a bit of reddish amethyst in the center. It was set in silver by the wonderful @birthcreaterot.
It measures 42 x 29 x 11mm and weighs 24.9g.
https://youtube.com/shorts/qAhdZ-m9WfM?si=E5wNI344kOJM7Yie