Scientifically speaking, the term “crystal” refers to any solid that has an ordered chemical structure. This means that its parts are arranged in a precisely ordered pattern, like bricks in a wall.

Earthquakes may cause gold nuggets to form in quartz by generating an electric field that attracts gold dissolved in fluid forced up from deep underground. Enormous gold nuggets are often associated ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

While Boyce’s crystal may be the largest single crystal of copper sulfate, students at the Kurfrüst-Ruprecht-Gymnasium in Germany hold the record for overall size. Their polymorphic crystal reached a ...