Is this fossilized bone or petrified wood of some sort??

[Chrysalyst]

Found on shoreline in Charleston. What could it be?

 

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[IAMZIM]

Could be jet?[h=3]Jet (lignite) - Wikipedia[/h]
[url]https://en.wikipedia.org/wiki/Jet_(lignite)
[/URL]

 

[Chrysalyst]

I was thinking that myself, but these pieces are very shiny and very smooth. Jet seems to be more dull and layered almost like shale, am I right?