Garnet, a hard, transparent or semi-transparent mineral occurring as crystals, as grains, or in irregular masses. Garnets are silicates in combination with iron, calcium, manganese, magnesium, aluminum, or chromium. Most of the gem garnets —pyrope, almandite, spessartite, andradite, uvarovite, and grossularite—are reddish in color, but some are greenish, yellowish, or white. The garnet is the birthstone for January and represents constancy. Common garnets are used as watch jewels (bearings), as abrasives, and in coating sandpaper.
Countless movies and television shows depict quicksand as some kind of living creature that sucks its victims down into a bottomless pit, never to be heard from again. Well, you can't believe everything Hollywood tells you.
Asbestos, once seen as a miracle construction material and used ubiquitously, has been found to be a deadly and unwanted substance. It is now clear that asbestos exposure places you at risk for a variety of respiratory illnesses. Is asbestos a friend or foe? Take this quiz and learn more about asbestos.