Nephrite jade is one of the oldest gemstones in the world, is a gemstone of unique symbolic energy, and unique in the myths that surround it. With its beauty and wide-ranging expressiveness, nephrite jade has held a special attraction for mankind for at least 7000 years.
Nephrite jade has variations in color, shade, tone, pattern and texture due to the trace elements of iron, chromium, magnesia, calcium etc. within the stone’s mineral formula.
For information on cleaning the egg before use look here.
Please educate yourself thoroughly before using the egg.