Amethyst
This majestic stone ranges in color from deep purple to pale lavender, depending on the presence of manganese and iron. Leonardo Da Vinci once wrote that amethyst holds the power to dissipate evil thoughts and quicken one’s intelligence. Cross-culturally, this gemstone is used as a symbol of peace and unification. It is also thought to evoke feelings of serenity and calmness.
Amethyst is also called the "Sobriety Stone". Not only is it believed to help with physical addictions, but mental ones as well. Sometimes we get obsessed with thoughts or ideas and our inner dialogue becomes a huge distraction filled with negative thoughts. Amethyst quiets the mind allowing ideas to flow and not get stuck in one thought pattern. Being associated with the crown chakra, It increases wisdom, intellect, intuition and clarity.