As the Earth moves around the Sun each year, the constellation on the other side of the sun will change as the position of the Earth changes. In ancient times, astrologers divided the circle into 12 sections of 30 degrees ( a circle has 360 degrees) and named each section using the name of constellation that was closest to the rising sun during that period. This was not an exact match even back then because the constellations vary in size, but the idea was to name the Zodiac sign using the name of the nearest constellation at the time (2,000 years ago). The Best Crystals for Your Workspace Clear Quartz. When distractions arise, we like clear quartz to help stay focused is Amethyst. For those unavoidably stressful situations, use amethyst to help you get back to a place of calm and relaxation. Also check out Rose Quartz, Pyrite, Tourmalinated Quartz. ... Chrysoprase, Black Tourmaline & Shungite. Amethyst is a protective stone that provides relief from stress and anxiety. This stone helps to calm your mind and provide quality sleep at night. It interacts with your spirit at a high level, as a result, you might also get some pleasant or intuitive dreams at night.