How does one achieve such an Easter egg? Fancy laser cutters? Computer controlled carving machines? Ancient, secret Easten European techniques that are only known by, like, six living people?
Nope, just a pattern and some patience. Which means you can do it too.
Instructabler BBStudio says, "This was done simply to discover if I could do it. I went though a stage where my goal was to remove as much material from an egg shell as possible while still retaining the shape and image of the egg. Carving an egg shell like this is great fun and watching people's reactions when they seem something like this is even more fascinating."
He used a goose egg, a high-speed tool called a Paragraver and a "light touch."
See more at Goose of Geometry [Instructables.com]