Introduction

An uncut octahedral diamond from South Africa. The eight-sided shape reflects diamond’s cubic...

Introduction

In the heart of the 20th century, the American Midwest was the...

Introduction

A simple field-tested method for telling igneous, sedimentary and metamorphic rocks apart...

A Field Tradition That Looks Weirder Than It Is

Yes, geologists really do lick...

Introduction

In the U.S., diamonds account for 92% of gemstone sales by value. That...

Introduction

Field geology – the art of studying rocks and landscapes in their natural...

Introduction

Caves are naturally occurring voids or systems of voids beneath the surface of...

Introduction

In the vast realm of geology, minerals not only contribute to the Earth’s...

Pancake Rocks from Punakaiki New Zealand are amazing! The Pancake Rocks are most spectacular...