Imagine a glass window that’s tough like armor, a camera lens that doesn’t get scratched in a sand storm, or a smart phone that doesn’t break when dropped. Except it’s not glass, it’s a special ...

This story may make you go from green to red. If you were born in the month of August, you are most likely a Leo or (for those born after August 23), a Virgo. You have also been long accustomed to ...

Peridot is a yellow-green stone that comes from the mineral olivine. Some believe its name derives from the Arabic "faridat," or "gem," according to Geological Institute of America. Others, however, ...

Spinel, MgAl 2 O 4 (download cif), is a rare gemstone that was used to imitate rubies. The structure has face-centered cubic symmetry, and is a little heavy to understand. The general formula is AB 2 ...