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 yo…