These opalescent glass eggs are very popular and known as magic eggs..Made in China via a special process. Unpolished eggs look just like ordinary glass when they are dry. Magic eggs, when wet or polished reflect light in a wondrous or mysterious way and resemble opal. Some people believe they can absorb negative energy and make living environments more positive. 45x30 mm. What makes them Magic? These Opalescent glass eggs from China reflect light in wondrous ways. Notice how the colors and translucence change with different light sources. The eggs are particularly alluring in water- in a fountain the eggs reflect the surroundings and shimmer as water trickles over them. People of all ages are intrigued by the mysterious Magic Eggs which change color from opal to blue when held in the palm of the hand.