Is this agatized coral?

[Jennybock]

 I wish I could recall for sure where I found this.  Most of my collection is from tide pools and coves on the West coast of the US but it could possibly be from Zion National Park in Utah, Kern River in CA, or a number of other places but those listed are most likely.

 

It’s porous, lighter and slightly warmer than stone.  The dark red areas are striated and softer than the rest. It does resemble some photos I’ve seen of agatized red horn coral, but I’m not sure.  Any ideas or suggestions are welcome.  

[DPS Ammonite]

Your coral looks like a piece of modern coral that has been dyed red when it was dead and eroded. When coral is dyed, the dye only reaches part way into the interior. It looks like it may have been tumbled even more since the red coating is so damaged. See this great article on precious coral: 

[ynot]

Looks more like a bio-eroded shell fragment than a piece of coral to Me.