This is one of the stranger things I've found at a construction site. I was surprised to find this in the middle of the construction site where the machines had already removed the top soil and exposed in situ earth.  Veins were present and visible nearby yet this thing "lies" there defying time and space, a strange anachronism in the most literal way. Perhaps a modern human carried this lapidary creation, a rockhound perhaps, and lost it just previous to my own encounter with it. Without a loupe we could not quite make out the inclusions we saw. The possibilities of how it came to be there were too numerous and hazy without a closer look. Back to the lab!

Excellent, now lets see what those inclusions look like.  Irregular bubbles it seems. No visible mineral inclusions.  There were several exposed bubbles or micro-vugs, for lack of a better word, on the surface of this piece and I magnified one of them. It appears that conchoidal fractures make up the walls of the exposed micro-vugs.

So what do you think?