Diamond
Of all precious stones the diamond has the simplest composition; it is merely crystallized carbon. Carbon is present in every plant, mineral and animal on earth. Diamonds comes typically from the mines in South Africa. Other countries like India, Brazil, Australia and the United States there has been found diamonds too.
Emerald
An emerald is almost certainly the rarest of all precious stones and is measured by some to be even more valuable than the diamond. If you compare it with other precious stones the emerald is unique in its occurrence in nature. Because it is found in the rock in which it was formed. Different from diamonds, sapphires and rubies, the emerald never occur in gem gravels. The first known locality where emeralds were found was in Upper Egypt close to the coast of the Red Sea. The best emerald stones are found in Columbia, South America. Fine specimens have also been found in the United States in North Carolina.
Ruby
Rubies are the oldest or first identified of all precious stones, dated far back in the early history of Caldera and Babylonia. The finest specimen and the largest quantities are found in Upper Burma. And...