This is a Calcite Crystal Whelk Shell Fossil from Florida filled with honey calcite dogtooth crystals. This specimens is truly unique and is a valuable collectible for those interested in rocks, fossils, or minerals.  2 Million Years old.  This shell is still attached to original matrix making this piece unique and a great dispay piece.  The shell of this whelk is also very calcified.  These crystals react well and glow a light green/white to UV light and displays Phosphorescence.