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.
Other Quartz. Amethysts are often found near other stones from the quartz family. Citrine, a yellow-colored quartz gem, is commonly found in combination with amethysts. Amethysts are also found on top of clear and cloudy gray quartz.he largest amethyst concentrations are found in volcanic rocks, according to The Quartz Page. These deposits are found all over the world, but the largest deposits are in Brazil and Uruguay.