Amethyst is February's birthstone. It is the purple variety of quartz. Amethyst was associated with Bacchus, the god of wine. Wearing amethyst would keep the wearer clear-headed and quick-witted.
Many wearers of amethyst throughout history and even today prize the gem for its symbolism as well as its beauty. Leonard da Vinci once said that amethyst helps to quicken intelligence and get rid of evil thoughts. Other qualities like peace, stability, courage and strength are said to be derived from this gemstone.
This astonishing amethyst, turquoise, and diamond necklace was made for the Duchess of Windsor by Cartier in 1947. It's often featured today in museum exhibitions.