Likely native/Indian, but native stone isn't my area of knowledge.... I can come up with a name for this kind of thing, but others will have to comment on authenticity.....
Bannerstone is the name I was thinking of; opinions vary as to what they were used for. Commonly found in the Eastern USA. https://en.wikipedia.org/wiki/Bannerstone
could be a club head also, but the stone looks too porous .. nothing to identify it as native made.......imo.
I don't really have an opinion as to native vs. non-native, but an expert in native stone might. I did find a lot of interesting articles on what are commonly called "bannerstones" which is what this appears to be. If authentic, it is a type of artifact whose use is unknown. Even the experts disagree, many thinking they are atlatl weights, others clubs or axes, or purely ceremonial. One interesting article pointed out that atlatl weights had no need for symmetry; and there were many easier attachment methods than drilling a hole through them. The author had taught himself to use primitive technology, and found that uses such as spinning fiber were more likely - as a spindle-weight. http://www.thunderbirdatlatl.com/2007/11/08/bannerstones-and-how-they-relate-to-the-atlatl-2/ A website with images and articles; one image looks very like the one seen in this thread, though of a different type of stone: http://www.bannerstones.com/p-bannerstones-from-the-terry-mcguire-and-ed-harvey-collections Interesting....
Yes, a bannerstone. Another fairly scarce item in very good condition. Hole seems very true. I'd check the inside of the hole for drill marks. Again, provenience?
From a particular geographic region of the USA? The 'armulet' and gorget don't quite look right to me. Is that a pipe? The two pendants are just stones with hole drilled in them. The last item is a sort of grooved celt or adze, but the shape, groove and raw material don't match any typical types known to me. As I mentioned in your other post, the old fakes are hardest to tell. Can't say for sure without handling them, but I'm suspicious. That said, they are interesting objects, made by a fairly skilled person.
That one looks suspicious too. The shape isn't quite right for a skull cracker, but it's close. Both ends are typically identical. The material looks like steatite or soapstone. Back in my relic-making days, I'd buy old soapstone bedwarmers to saw up and carve. A carpenter's steel 4-in-hand rasp works nicely. The relic shown looks like it has abrasion grooves.
I have no info or relevant comments about any of the items in the collection, just a weird comment. I thought the first item was a Japanese ikebana vase until I had scrolled down far enough to see the tape measure, LOL.