Related: What's the difference between a rock and a mineral? Rocks located in the Acasta Gneiss Complex in northern Canada have been dated to 4 billion years ago, making them the oldest ...

The Blowing Rock is touted as the oldest travel attraction in North Carolina, drawing in visitors since 1933. This peculiar gneiss cliff is named for the strong updraft created by the gorge below ...

Our scientists have been looking for a rock that formed so long ago it was on Earth before complex life lived on land. Called Lewisian gneiss, it’s the oldest rock in the UK. It’s found in the ...

Ken Dardano never imagined his passion for rock collecting would turn into today's crystal empire when he launched his ...