Ruby is the birthstone for July and also the anniversary gemstone for the 15th and 40th years of marriage. The July birthstone of the Ruby is considered to be the birthstone for Cancer (The sign of the Crab) and relate to those born between June 22-July 22. The Zodiac sign, of Cancer also responds to emerald, Sardonyx, Ruby, pearls and Moonstone. The word Ruby comes from the Latin "ruber," meaning red and was called the "Rajnapura" or King of Gems by ancient Hindus. It has been celebrated through history because ......