I had an object of about the same dimensions that I thought was a fossilized egg. Only mine was rock on the outside. Like a thin layer of gray rock.
The inside was white all the way through. The "egg" was extremely light and felt like it would float in salt water. Actually I broke it open because
it was so light (wondering what the hell it was), and thats how I saw the whiteness inside. I dont remember if it had another "bubble" area in the
center... I think it was porous (very tiny holes) and made of very light white rock. (limestone?)
Is your egg smooth? Maybe someone else made it and lost it. I had a huge crystal before, big enough to make and egg out of. Could be one of these:
Mineral
Eggs
Anyways sounds like you got a good mystery on your hands. Lets hope the dragon is a herbavore..



