A member of the quartz family, amethyst is mined extensively in Brazil and Zambia. Long associated with tranquility and happiness, aquamarine was also thought to instill courage, cure laziness and sharpen the intellect. Like emerald, aquamarine is a member of the beryl family. It is frequently free of flaws and may occur in very large crystals. The aquamarine is not a brilliant stone, but depends on its size and purity of color for effect.
Brazil is the most prolific supplier of aquamarine, which is often found in shades of blue-green.
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. 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.