Spotted a small black speck while trimming down mineral specimens with the diamond saw.  Later took some pictures through the stereo micr...

Smiley face created with uranium marbles being illuminated with a longwave ultraviolet (UV) light. MARBLES for sale ( eBay LINK or e...

A fern fossil plate from the famous St. Clair, Pennsylvania site.  Fossils date to the Pennsylvanian or Carboniferous time period.  The w...