There are a lot of myths about crystals − for example, that they are magical rocks with healing powers. An earth scientist explains some of their amazing true science.

How do crystals form? – Alyssa Marie, age 5, New Mexico Scientifically speaking, the term “crystal” refers to any solid that has an ordered chemical structure. This means that its parts are arranged ...

There are a lot of myths about crystals − for example, that they are magical rocks with healing powers. An earth scientist explains some of their amazing true science.

Watch igneous rocks, the solidified products of molten magma or lava that form some of Earth’s most intriguing geological features. Igneous rocks are classified based on where and how they solidify: ...

They do this in a uniform and repeating pattern that forms the crystal. Crystals can form when liquid rock (magma) cools. Many valuable crystals, such as diamonds and emeralds, form this way.

Pegmatites form when magma crystallizes inside Earth. These igneous rocks contain huge crystals and rare elements that are not found in other types of rocks. For example, the Etta mine in South ...

Are all minerals crystals? How are diamonds cut? How do geodes form? Is the Hope Diamond actually cursed? This rock and mineral expert answers all these questions and more.

There are a lot of myths about crystals − for example, that they are magical rocks with healing powers. An earth scientist explains some of their amazing true science.

Rocks are mixtures of different minerals. All minerals are crystals , but not all crystals are minerals. Most rock shops sell mineral crystals that occur in nature.

How Do Crystals Form? November 20th, 16PM November 20th, 16PM (The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Natalie Bursztyn ...