Yes very sweeet! A friend of mine picked up a perfect hematite plummet similar to that when we were surface hunting, always hoped to find one myself but it's never happened. Great find!
what is your present theory on their use? Obviously (to me utilitarian)...but it is kinda hard not to agree that if you need a sinker, (that could easily be lost), you wouldn't need or want to put so much effort into making one.
The jury is still out for me on it honestly but I could definitely see some sort of use as a good luck charm if not actually a utilitarian device... there's guys walking around with fish hooks clip to the Bill of their hat and bone ones hanging from necklaces right now
You would probably have a better chance if you did some hunting around areas where there were large village sites normally close to larger old bodies of water.. the water was important because the time period these things fall into is associated with a time when villages where the main way of life and these would have been by bodies of water that enabled transportation as well as sustenance... you won't find many of these or beads out in hunting grounds