Wow, I've never really heard of one of those, so I looked online. They seem pretty pricey, but I be suspicious of some of the ones I see up for sale. At least you know yours is genuine.
What's really interesting to me is this is a utilitarian piece not made of super nice stone. Looks like granite. There is also no boring rings like in all of the high end quartz pieces on line the bore is smooth.
There are multiple theories as to what these were used for. One theory is for ceremonial purposes only this one does not look like that, it looks like it was used.
How I don't know but kind of rules out that theory.
At the site we are finding lots of big flakes and a pile of white quartz preforms and maybe a couple of possible hammer stones that we were not sure about. Now looking back on those stones maybe they are tools not just smooth round rocks. They have some marks on the end like they were used but I was not sure about them. We also found a small bird bone tool. This looks like a working camp not some ceremonial site.
We have found very little pottery and the site is on a hill all wooded over looking a creek. We have found about 6 points there. Guess I am going back and find the rest of it!!
Nice find .... I have one I found years ago and didn't know what it was for the longest time.It looks almost the same as yours as far as material and size I'll see if I can find a pic of it. Found mine in Maryland (eastern shore)
I have found a small piece of one just the drilled section. If we ever get any rain I might find some more of it cause they tilled the field this year.
Nice find you made.