If you draw with a pencil, you can tell how soft the graphite inside is. Pieces of graphite break off to leave the pencil mark. But can you imagine drawing with a diamond? Diamonds and graphite are ...

While landscaping brings greenery to many people’s minds, rocks are an important part of landscaping, too. Perhaps more accurately a hardscaping element, the various types of landscaping rocks add a ...

Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...

Rocks and minerals are closely related, but there are fundamental differences between the two. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

How hard is a diamond? What is the difference between granites and garnets? Minerals are the building blocks of rocks. They are inorganic, crystalline solids with a known chemistry. Examples of ...

What is the rock cycle? There are three types of rocks — igneous, sedimentary, and metamorphic — that have formed over time in the Earth's different layers. A rock can begin as one type and can change ...

Sedimentary rocks are made up of pieces of older rocks (igneous, metamorphic, and sedimentary) and organic remains (shells, bone, etc.). When rocks break apart from erosion they are transported by ...

Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

Geologists have come up with an original explanation of how nature may produce an intriguing class of magmatic rocks that are made up of only one type of mineral. Geologists from Wits University in ...