I'm going with AlabamaRelic
See that bone ... see those cuts ... super common possibility.
Takes a fraction of a section to test ... hold a small nail or straight pin with pliers, and heat the tip with a lighter, a stove, a campfire ... etc.
Easy peasy.
If it's petrified or stone, it won't make any smoke or odor when you touch it to the item.
(few exceptions, but very rarely will you get smoke from a stone)
You can smell hair or hide items, plant material items, bone items, antler items, ... etc.
Takes a fraction of a second and only leaves a tiny pin prick on the item.
Sliced ham bones such as this look like rings when found.