May Birthstone - Emerald
Emerald ColorEmeralds vary from light to dark green, and most are embedded with bits of other substances. Perfectly clear emeralds are rare and very expensive, so it is not uncommon for emeralds to be treated in some way to enhance their appearance.
Emerald Folklore
Some cultures believed that emeralds gave the wearer psychic powers. They were thought to improve both eyesight and fertility.