Keep a minimum of a good five car length from the car in front of you. You never know what other drivers are going to do or what could happen to you! If that feels too close or too far a rule of thumb is 1 second of following distance per 10 mph (16 km/h). That holds true especially in bad weather.
It is also found and mined in South Korea. The largest opencast amethyst vein in the world is in Maissau, Lower Austria. Much fine amethyst comes from Russia, especially from near Mursinka in the Ekaterinburg district, where it occurs in drusy cavities in granitic rocks. Many localities in south India yield amethyst.
The location where amethyst is mined has a big impact on its appearance (saturation, distribution of color and formation too). Amethyst generally ranges in color from pale pink to light purple (violet) to dark blue violet. It can also include shades of red and gray. Uruguay is best associated with amethyst that has a deep purplish blue color. The same is true for amethyst which comes from Arizona, Russia and Africa.