The official birthstone of June is a rare color-changing garnet called Alexandrite. Changing from Green to Red depending on the light, it's a stone that perfectly depicts the changing season from Spring to Fall.
A great alternative birthstone for this rare gem is the Pearl. Termed the "Queen of Gems," pearls have for civilizations on end represented prestige, power, and wealth. Like its long history, pearls have a unique way of making its wearer look elegant, respectable, and rich.