Congratulations, you've discovered a Moonstone Gemstone!!
Moonstone's name is derived from a visual effect, or sheen, caused by light diffraction.
Moonstone has been used in jewelry for centuries, including ancient civilizations. The Romans believed the gem was formed from the solidified rays of the moon. Both the Romans and Greeks associated Moonstone with their lunar gods and goddesses. Moonstone was also popular in jewelry during the Art Nouveau period.
Deposits of moonstone occur in Australia, the Austrian Alps, Mexico, Madagascar, Burma, Norway, Poland, India, Sri Lanka and the United States.
It is currently the state gem for Florida.