Ancient Throwing Stone or Tool? South Carolina landscape The upper right corner was

The upper right corner was neatly cut away at some point but backed with a similar blue so does not especially  jump out

but am not entirely certain

and casting such great shadows

Perfect for filling with new powders and tonics

showing off the dexterity of its maker

Ancient Throwing Stone or Tool? South Carolina landscape The upper right corner wasI purchased this from a wonderful dealer in New Hampshire whose cabinet of curiosities includes objects decommissioned from museums and science departments as well as gathered from estate collections all over. She didn't know the origins of this stone and neither do I, but it sure looks like a throwing stone to me! If not certainly used as a tool of some sort, with a couple of divets on the bottom one just the right shape for a thumb gripping it.