Aluminum oxide (Al2O3), also known as alumina, corundum, sapphire, or ruby, is one of the best insulators used in a wide ...

Glittering blue sapphires, so suggestive of piercing cold, have remarkably hot origins deep beneath the surface. For years, sapphires been turned up in volcanic deposits such as the Volcanic Eifel, ...

Sapphire is September's birthstone. This gem belongs to the corundum family. Corundum is inherently colorless, according to the International Gem Society. So, each stone's elemental structure ...

In the real world, several attempts have been made to produce a transparent material strong enough to do the job that Star ...

The researchers discovered that the surface undergoes rearrangement, allowing aluminum atoms to penetrate and form chemical ...

Rubies are formed of a mineral called corundum, comprised of aluminum oxide. The red color is caused by traces of chromium. Corundum also forms sapphire in many colors, which generally come from ...

Like their gemstone cousin the sapphire, rubies are just a variety of corundum, or aluminum oxide. Where sapphire gets its blue tint mainly from iron, rubies get their pink to blood-red hue from ...

LARGE crystals of corundum have been grown for many years by the flame-fusion process originated by Verneuil 1. Crystals coloured by small amounts of chromium, titanium, vanadium and other ...

Aluminum oxide (Al2O3), also known as alumina, corundum, sapphire, or ruby, is one of the best insulators used in a wide range of applications: in electronic components, as a support material for ...

The structure of the aluminum oxide surface was determined with noncontact atomic force microscopy and computational modeling ...

Here are some of the best of them. The recipe calls for Corundum ingot, leather, leather strips, and steel ingot. Scaled armor, when wearing a full set, will grant the player an armor rating of ...

Each month has at least one representative gemstone. Here's what you need to know about September's birthstone.