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.
Amethyst is also found in igneous, and certain metamorphic rocks, as those contain enough radioactive trace elements for a sufficient irradiation of the crystals. Amethyst from sedimentary rocks is very rare, and the crystals are usually very pale in color.As the ubiquitous iron is built into the crystal lattice, amethyst is sometimes found in ore deposits. However, to be built into the quartz crystal lattice, the iron needs to be present as Fe, and not as Fe.methyst from a druse with goethite, FeOOH, inclusions, Rio Grande do Sul. As mentioned earlier, inclusions of iron minerals can frequently be found in amethyst. The crystals have well developed prism faces, which is not common on amethyst from volcanic druses, and show a patchy distribution of color.