DULUTH — About 1.1 billion years ago here, fissures opened in the surface of the earth, depositing lakes of molten rock near what would eventually be the Twin Ports and Lake Superior. This is ...

Agate countertops are known for their beauty. The gemstone adds a unique look to any room. However, there are a few downsides to this type of counter.

Along with the ancient volcanic gems they seek, Oregon’s agate-hunters can be spotted year-round across the state’s shores and watersheds. “Only look right in front of you,” Seana Sutton said, her ...