plant

Hey, I'm here to show off this gem~ an agate x petrified wood piece that I saw at a local shop and i had to snatch it as soon as I saw it.. there's a small window that shows what seems to be some sort of stem of a plant inside of it. I assume it to be extremely old and is a precious coincidence...

Hallo! Over the years, I have found lots and lots of these (see photos below) in the creek bed on our estate in eastern Kentucky. I think they're from the Sigillaria Tree from the Carbondale Formation and just wondered if anyone could verify this and maybe give some more information. Thanks...