This?
https://deseretbook.com/p/joseph-smiths-seer-stones?variant_id=145453-ebook&gclid=EAIaIQobChMIwvCKlLCD5QIVUxx9Ch3l1AmGEAQYASABEgJOM_D_BwE
OR this?
http://www.geologyin.com/2018/12/gemstone-turns-out-to-be-fossil-of.html

selling seer stones. They never even talked about seer stones when I was young. Now they are embracing it? Crazy!

I purchased my seer stone at a rock shop in Austin Nevada but I've yet to find the right rock+hat combination to make my rock anything but an interesting stone.

You need to make sure that the stone and the hat use the same operating system.

The hat has to have had an apple on top of it and shot at it with an arrow where the hat was containing a seer's head in it.

The crenulations found in the ornithopod dinosaur's teeth suggest that they were not teeth, but of a certain genera of brachiopod. Brachiopods tend to nest together like this. It's certainly a stretch to say that the opalized fragment is a jawbone. My source here is myself. I wrote a thesis on brachiopods of the Upper Ordovician.

The Seer Stone is a simple banded iron formation; aka BIF.

Both represent a fascinating period in historical geology.

Well, at least the opal fossil is something. The seer stone is nothing.

The seer stone produced a billion dollar church. Lying horn dogs can improvise.

Millions of years old creature, billions of dollars church. Sounds like you have your priorities straight and narrow.