MOONSTONE RAINBOW.
This gemstone is a high grade verison of Moonstone. Has a blue flash or irridescence. 
Travellers Talisman
Composition: (Na,K)AlSi3O8
 
Healing: Feminine stone, eases period pains and balances emotions. Useful at regulating the body during pregnancy, menopause, menstruation, childbirth and breastfeeding. Helps in accepting change & transition. Excellent for connecting to the power of the moon.
Cool Facts: According to Hindu mythology, moonstone is made of solidified moonbeams. Many other cultures also associate this gem with moonlight, and it’s easy to see why. Its internal structure scatters the light that strikes it, creating a phenomenon known as adularescence. The visual effect is reminiscent of the full moon shining through a veil of thin, high clouds. Legends say that moonstone brings good luck. Many believed that you could see the future if you held a moonstone in your mouth during a full moon.
Adularescent moonstone was once called “adularia.” The name originated with a city in Switzerland, Mt. Adular (now St. Gotthard), that was one of the first sources of fine-quality moonstone.