So now let me get this straight, you've been digging in a pile of quartz on your property and you're finding more quartz rocks. Lots of them! But you didn't really have to do any digging at all because you already knew it was there because that's the reason you were digging there in the first place?

If you are enjoying yourself, by all means have a good time. That's how you learn. But I would call that Bull Quartz and move to another spot. All those colors are normal and totally natural from all the minerals like Hematite and Iron Oxides and clay decomposing and staining the quartz. It's a great sign that you have that outcropping on your property because there could be something good close by.

Speaking of which, you just a couple of miles east of  the most productive Amethyst Zone in the Southeast. You've got the Diamond Hill Amethyst Mine at Antreville, SC, and one of the top quality Amethyst mines in the world at Tignall, GA, Jackson's Crossroads. Draw a line from Diamond Hill to JXR, and you have the center of the zone. 5 miles either side would be worth looking at.

Have you ever seen any quartz crystals on your property?

Good looking hunting companions you have there!
And, yes, you have a lot of quartz. That's a good thing.
But I was very glad, relieved, to see the last picture of the one quartz crystal you have found. That looks like a nice one, and in my humble opinion, that's what you should spend more time looking for. You will find the different colored rocks where ever you find quartz, but the Quartz Crystals are the Prize!

Those Native Americans would find the very best rock no matter where they were! Whatever kind of rock there was in an area, they would find the best.
I was going to say this earlier, but I think you are letting all the colors preoccupy your thoughts and eyes, and the pristine, solid, milky white veins are the ones you should be looking closer at.
It sounds like your crystal site might be an aboriginal quarry site. It's hard to be on a known artifact site and not look for them, but you definitely want to go back to that site with your eyes trained on crystals and see what you see.
The easiest thing would be to train those youngins' of yours to sniff them out!
Have fun down there in the land of retirement!

I cant wait to get back into that debris field when it gets cooler. Im going to use the auger and see what we find. I uncovered it when raking up debris with the tractor after my pines were thinned.

  Thank you JoeM, I will use the scrape blade to pull off the topsoil and then let it rain. I will shift the topsoil for artifacts. I got my hope up now, lol. The site is thick on each side with underbrush and we run across more than the occasional Copperhead or other vipers. I took a video of a Plain Belly water snake eating a frog yesterday.