Silicates—including quartz, mica, olivine, and precious minerals such as emeralds—are ... comprised of aluminum oxide. The red color is caused by traces of chromium. Corundum also forms ...

Peridot is a striking green gemstone, a variety of the mineral olivine. It has been valued for its vibrant colour and ...

The study details a way to turn the mineral olivine, which also forms the green gemstone peridot, into an alternative for ...