Ethiopian opal with fossil vegetation

[Vopros]

Here is a video of an Ethiopian crystal opal with what I think is root systems inside.

Are the inclusions really organic or they might be crystals? I added two microscopic images in the end of the video.

 

[Opabinia Blues]

That’s very interesting, but I doubt it’s an organic inclusion. Opal doesn’t form like amber close to the surface, and I have never heard of organic inclusions in opal. There may be other mineral growths present which give the appearance of roots. Neat!