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 ...

Chromium turns the corundum pink or red, and that's how we get rubies. What's more, whole other minerals – such as rutile (titanium dioxide) and zircon – can get trapped within sapphires as ...

Van Cleef & Arpels presents a new exhibition "Ruby" at the Les Jardins Secrets boutique at Raffles Hotel, from now until October 20.

The bulk of the soil solid fraction is constituted by soil minerals, which exert significant direct and indirect influences on the supply and availability of most nutrient elements. The main ...

Interestingly, due to the temperature of these worlds the clouds are not made of water, but instead things commonly found as rocks or minerals here on Earth such as enstatite (sand), or corundum (the ...

researchers have found that taking a daily supplement containing antioxidant vitamins and minerals slows progression of late-stage dry age-related macular degeneration ...

It has low heat retention and low specific heat making it useful in a wide array of grinding and sanding applications. Aluminum oxide occurs naturally in the form of the mineral corundum, but the ...

Aluminum oxide occurs naturally in the form of the mineral corundum, but the mineral is not used as a commercial abrasive except as a component of emery. Alumina-Zirconia (e.g., Norzon®) ...

Mineralogy is the study of minerals, the building blocks of rocks, which are naturally-occurring, crystalline solids with a set chemical make-up. This includes the study of the chemical ...