Opal is considered the birthstone for people born in October. Famous opals. The Olympic Australis, the world's largest and most valuable gem opal [citation needed], found in Coober Pedy; The Andamooka Opal, presented to Queen Elizabeth II, also known as the Queen's Opal
1 Carbohydrates â are required for energy. 2  Glucose, which is a monosaccharide, is the most essential source of energy in the body. 3  The brain works entirely on glucose alone. 4  When an immediate source of energy is required, glucose is converted into glycogen which is stored in the liver.
Home Â» Importance of Carbohydrates. Carbohydrates are our main source of energy and provide the ideal fuel (glucose) for your body to function optimally, as well as many essential vitamins and minerals.They are also the only form of energy used by the brain.ome Â» Importance of Carbohydrates. Carbohydrates are our main source of energy and provide the ideal fuel (glucose) for your body to function optimally, as well as many essential vitamins and minerals.