Many believe that wearing a green gemstone will promote conception. It is said that The Goddess Isis wore a large green emerald on her headband, and all that looked on this emerald would be able to conceive. Isis was the earth mother goddess of the Egyptians.
In India the color green is the 4th energy Chakra (the heart). So, in our heart lays the 2nd kingdom of nature.
Green is the color of wisdom. Green stones worn, are said to promote receptiveness to the wisdom of nature.