You can use apps like "Rock Identifier: Stone ID" to quickly determine the value of rocks. These apps have a database for you to reference different types of rocks for identification. The ...

Rocks older than 4.03 billion years could shed light on Earth's earliest geological history, but they're incredibly rare.

Rock hunters can identify Yooperlites by their appearance, unique properties (like fluorescence), and other characteristics. Most people do their rock hunting during the day, but you can't find " ...