This is an artistic Easter Egg, called Vrhniški pirh, created by Franc Grom. He makes them by drilling little holes with the electric drill. Source: Vrhnika.si.
"Florentine Flames" Goose Eggs
Egg-Shaped Architecture & Art From Amazing To Bizarre
no tutorial but a DIY project I better start now! Carve egs with a dremmel in well ventilated room and wear a mask. MonaRaeBeads.etsy.com
Egg Carving Art | Egg Shell Carving | unusual by carving the eggshells she uses chicken ...
Coups de cœur | Tumblr
pisanki gęsie skorupki goose egg shells made by Bogusława Justyna Goleń Ażurowe Pisanki
Hand Carved Victorian Lace Duck Egg Wreath by theNestatWindyCorner, $34.00