Un identified specimen

[Julia buck]

I have been stumped by a "rock" I found in my garden over 25 years ago.

I have had a continuous need to know what it is purely for my own curiosity. It has "something" inside of it and during the years I've had suggestions of lizard eggs,  man made object, etc. Ive obviously spent endless hours looking at it, and I think I've seen some kind of feathers entwined around the small round egg like masses encapsulated within the dark almost black in some light yet like sunrise in another.

 

 Its too large to float test  fairly heavy makes me doubt amber but given the detail inside hard to think of alternatives. 

 

 

 

[Julia buck]

I will add that I live very close to an area where dinosaur skeletal bones were found (bristol uk) . maybe just a complete coincidence but the shape of the stone is very similar in shape to the bronchosorous ( skeletal type found near by) 🤔 

[Julia buck]

[Julia buck]

[FranzBernhard]

A piece of glass with cristobalite suns (partial crystallization due to slow cooling of the melt).

Very probably man-made glass.

Franz Bernhard

[TqB]

I agree it looks like a fine piece of glass slag. Bristol has a long history of glass manufacture. (I've seen spherulitic crystal structures like that before in glass waste but didn't know it was cristobalite. Thank you @FranzBernhard!)

[Julia buck]

Thank you for your time and reply. I love  it no matter what, its so beautiful when the light shines through it. 

[Fin Lover]

And it matches your cat very well.  

[FranzBernhard]

8 hours ago, Fin Lover said:

And it matches your cat very well.

LOL!! Where is the cat??

Perfect camouflage!

Franz Bernhard