Giant agates found in an island on Panama’s Pacific coast prompted a study on how the Isthmus evolved and became a bridge between two continents Vanessa Crooks Sea conditions in the Pearl Islands can ...

Known for their colors and patterns, collectors are often amazed at agates that turn up on Upper Peninsula lakeshores, with some known to be up to 20 pounds, according to the Michigan Department of ...

140 years ago, an agate specimen from India was registered in the Mineralogy Collection at London’s Natural History Museum. Now, a team of researchers say the suspiciously spherical agate formed ...