Galena

This beautifully formed metallic crystal  is formed by the joining of lead and sulfur atoms. Trea...

This beautifully formed metallic crystal  is formed by the joining of lead and sulfur atoms. Trea...

This beautifully formed metallic crystal  is formed by the joining of lead and sulfur atoms. Trea...

This beautifully formed metallic crystal  is formed by the joining of lead and sulfur atoms. Trea...