Red corundum is famously known as ruby. Rubies range from orangey red to purplish red to brownish red. All are acceptable colors to be called a ruby. It is the July birthstone and both the 15th and 40th wedding anniversary gift. Sri Lanka, Thailand, and Myanmar (Burma) are the major sources of ruby; Myanmar being the producer of the finest quality. Cultures from around the world praise this vivid red gem. The Greeks called it the mother of all gemstones. The Hindus called it the king of gems. The Chinese emperor desired a large ruby so much that he considered paying for it with a city! This bold colored gem promotes confidence and vitality to its wearer. It also represents passion and deep desire, perfect as a symbol of love.