Magic Glow Eggs are man-made stones that have been treated with a phosphorescent pigment that gives them a unique magical iridescent glow. Each egg-shaped gem measures approximately 2 inches long by 1.5 inches wide. This oval shaped glass specimen is finished in a satin surface and when held up to light it looks as if there is a yolk inside! A great testament to man's knowledge of mineralogy. Creates an interesting accent piece for fountains and decoration.