The ruby is the birthstone for July. It comes from the mineral corundum and ranges in color from pink to blood-red, deriving its color from chromium. Rubies are one of the hardest gemstones. Historically, the main source of rubies has been the Mogok Valley in Burma, though other locations include Thailand, Cambodia, India, Afghanistan, and Pakistan. Additional deposits have been discovered in Tanzania, Madagascar, Vietnam, and the United States. Rubies were believed to possess various powers including bringing health, wealth, protection and enhancing status.