Okeechobee, Florida, Mercenaria Permagna Fossil Clam (UV Fluorescent)

*Product photo is of the actual item you will receive when ordered.
These fossils fluoresce under UV light. The first photo is under UV light and the second photo shows the fluorescent green glow after the light is taken away.
 
This is fossil clam of the species Mercenaria permagna from the famous Ruck's Pit quarry in Florida. The interior is filled with large, golden-yellow calcite crystals, almost like a fossil geode. It's early Pleistocene in age, or somewhere around 2 million years old.
 
Ruck's Pit was a small cement quarry that for several years in the early 2000's produced some amazing crystal lined fossils. The quarry has been shut down and filled in with water for several years, so these fossils are no longer being found. Because of this it is difficult to acquire these remarkable crystal filled fossil shells, particularly ones of high quality.