Having chills refers to feeling excessively cold, even when you are wearing warm clothing or are wrapped in blankets. When you have the chills, you may also be shivering or look pale. Chills are often related to fever, an increase in body temperature above normal (98.6 degrees Fahrenheit). Fever is a sign of inflammation or infection in the body.
Amethyst is a well known mineral and gemstone. It is the purple variety of the mineral Quartz, and its most valuable and prized variety.Its name derives from the Greek amethystos, which means not drunken, as Amethyst in antiquity was thought to ward off drunkenness.hen used as a gemstone, Amethyst is often heat treated to deepen the color, or to transform it into Citrine. Some varieties may also change to a light green color, which is given the trade name Prasiolite, or Green Amethyst, as it is more commonly known in the gem trade.
Amethyst is a transparent variety of quartz that ranges from light lilac to deep purple in color. It is one of the most popular faceted gemstones and is sometimes cut en cabochon. It is found in many locations around the world.uby is the most popular colored stone. When the mineral known as corundum is of gem quality and a vivid red color, it is called ruby.. Historically mined in Asia, many rubies such as these are now being found in Africa.