Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
Might be a pre-molar for a large dog(?) #6 and #15 on the image below. From the image in night be a piece of broken shell(?) With teeth there is usually a pretty distinct change in texture at the gum line between the enamel and the root.