This Is an Actual Eggshell, Carved to Its Bare Minimum

Instructables member bbstudio set out to carve an eggshell as much as possible while still retaining the shape and the image of the egg; this was the result. “Yes, it is a real goose egg shell. I use a high speed engraving tool called a paragraver and a very light touch. I hold them in my hand while I carve them … There is no resin involved. As a matter of fact, this egg is still not treated with anything.”

(Instructables via MAKE)