The diamond has been a symbol of eternal love since the 15th century, when Archduke Maximillian of Austria sealed his engagement to Mary of Burgundy with a diamond ring. Of all jewels, the diamond is supreme and worthy of the name precious stone. It qualifies for all the virtues implied in that term: brilliance, hardness, rarity, antiquity, purity and permanence.
Although the most desirable diamond is colorless, distinct body colors such as blue, green, red, pink, and yellow are known. These natural fancy colors are rare and highly prized.
While India was the world's main source of diamonds for over 2,000 years, most diamonds now come from Africa, Russia and Australia. Of all diamonds mined, only a quarter are of gem quality.