On a very superficial level (superficial as in 'Paris-Hilton superficial'), it may sound a little humourous that Etruscans were venerating a tasty staple of the modern breakfast table and using it as a symbol of immortality. Perhaps it may seem akin to making an amulet out of Corn Flakes, but let me assure everyone that this is NOT something *I* dreamed up off the top of my hat. Historians, good ones, are widely aware of this historical fact as published in a pile of decent literature over the century. The common ritual of painting eggs during Easter is quite bluntly an offshoot of this earlier symbolism.
So the following are some more handy references to books on the existence of this motif. It's really not strange at all. It's strange that people aren't more aware of it, actually.
Behold! The Cosmic Egg link farm
Simoons, Eat not this flesh (1994), p.156: "In Rome, the egg, symbolic of life and fertility, was used in the rites of Venus and various deities associated with the earth and reproduction. Thus, an egg preceded the religious procession for Ceres, goddess of agriculture. Macrobius also wrote that in the rites of Liber, Roman god of fertility and wine (who was also called Bacchus and identified with Dionysius), eggs were honored, worshipped, and called the symbol of the universe, the beginning of all things. Eggs are represented on Roman sarcophagi, and funerary offerings of eggs, whether real or made of clay or stone, were common in early Greece, perhaps with the wish that the spirit of the departed may have a renewal of life."
Rykwert, The idea of a town - The Anthropology of Urban Form in Rome, Italy (1999), p.126: "As the egg was a picture of the whole universe, so the telluric mundus became a representation of what the Pythagoreans were the first to call cosmos."
Hall, Etruscan Italy (1996), p.70: "In the Near East, eggs were considered symbols of fertility, life-giving power, and, ultimately, resurrection; and the Etruscans' paintings and artifacts suggest that they, too, viewed the egg as a chthonian motif."
 I've unplugged from the AegeaNet insanity permanently. There's still the matter of their handling of the Minoan bull iconography and Minoan language that still sends me for a tizzy. I must still write about that. I can get more from this blog and people's interesting comments here anyways than a stuffy and poorly moderated forum tucked away in a dusty corner of the internet. Bah! Lol.