24"L x 2 x 2, star of David, double and 3 similar items

the only other one of these that I have seen is on Etsy and they're asking over $1,400 for it. this one is in remarkably good shape there's a couple of nicks at the top where the copper comes over the end of the termination. the entirety of it weighs just over 9 lbs, and what little research I did leads me to believe that it is a religious healing tool. it's origins where it came from who possessed it before me but I don't have a clue I got it to an sale I have relatively little knowledge of these types of artifacts and to me it's just another item to list and sell, S2 v stone or quartz crystal or acrylic tube or whatever the hell it is, I have absolutely no idea whatsoever what it's made out of for the purposes of our discussion here most people refer to it as a double terminated quartz crystal. now is it actually a quartz crystal? is it a synthetic quartz crystal? manufactured in a machine? who knows. I'm telling you for certain I don't have a clue what it's made out of and I will also tell you that with what little research I did I found out that finding a double terminated quartz crystal over 20 inches long it's just damn near impossible so I would not count on this being an original authentic quartz crystal out of a mine