Unusual inclusions in Ethiopian opal

[Mila]

I'll stand corrected on not seeing round mineral things before.

This Ethiopian opal contained an interesting inclusion scene consisting of a string of octahedral pyrite crystals and aragonite spheres.
An old blurb from GIA.

Thanks!
I did see the picture you've posted.
Here's a microscopic image of the second opal. Is this dendrite?

dendrites are not 'organic' inclusions so they are not real fossils
they are crystals of manganese which grow the same way like snowflake (and other stuff in nature)
in most cases they form 2D trees but in dendritic agate they are 3D and might look a bit similar to the photo you posted

here is Welo from my collection with unusual inclusions >


*btw. this is stable hydrophane Welo which is different to the 'new' non-hydrophane material

hope this helps

Thanks!
I know what dendrite is.
Here is my image of dendrite in Dominican amber



Your opal is vey nice but I doubt these inclusions are organic. I believe these are minerals, maybe dendrites too.
The inclusions look too uniform to be organic IMO.

[Mila]

And here is my opal with fossil twigs

[PinkDiamond]

That's a real beauty, Mila. You find some interesting opals, for sure.

[OpalSpectrum]

Thanks!
I did see the picture you've posted.
Here's a microscopic image of the second opal. Is this dendrite?

dendrites are not 'organic' inclusions so they are not real fossils
they are crystals of manganese which grow the same way like snowflake (and other stuff in nature)
in most cases they form 2D trees but in dendritic agate they are 3D and might look a bit similar to the photo you posted

here is Welo from my collection with unusual inclusions >


*btw. this is stable hydrophane Welo which is different to the 'new' non-hydrophane material

hope this helps

Thanks!
I know what dendrite is.
Here is my image of dendrite in Dominican amber



Your opal is very nice but I doubt these inclusions are organic. I believe these are minerals, maybe dendrites too.
The inclusions look too uniform to be organic IMO.

- to me this looks organic although I don't know what they are - but I don't think they are crystals
*the video title is for people to find it - because the 'roots / twigs' is most common type of inclusion found in Welo opal
here is macro photo with a bit more details then in the video
--- it reminds me seaweed floating in the opal

- and they are not dendrites - which in opals form 'normal' tree like crystals

I polished this rough but kept the dendrites on the back

** I don't have video but I'll make it and post it later when I find some time

here is link to my old post about Welo inclusions with some other examples - the photos are old and not best quality
viewtopic.php?f=14&t=91&hilit=odyssey

btw. it's believed that roots & twigs inclusions are not real fossils but opal replacements --- although there was report about Welo with bug inclusion ( it should be somewhere on the forum )

btw2. nice macro shots

hope this helps
cheers

[Mila]

btw. it's believed that roots & twigs inclusions are not real fossils but opal replacements --- although there was report about Welo with bug inclusion ( it should be somewhere on the forum )

btw2. nice macro shots

hope this helps
cheers

Thank you!
Very nice opals!
A bug was found in Indonesian opal. I have nor heard about any one found in Welo.

Here is one unusual



And here are two with dendrite