Certain areas of Georgia (such as Cleveland in the northwest or Wilkes County in the northeast) are known for their mines that feature quartz, amethyst and other natural gemstones. Rockhounds can pay to dig in these mines and satisfy their quest to find amethyst crystals. Because many of these locations are isolated, be sure to bring plenty of water, snacks and sunscreen. Most mines are open to the public only on certain days or will announce public "dig days" on their websites. You will be…