Operation Special Division - NCR

credits: http://www.swissgemlab.com/EducationPages/EducationSection.aspx?pcid=201&showAll=False History of Diamond About Diamonds Diamonds have been a source of fascination for centuries. The word "diamond" comes from the Greek word “Adamas”, meaning "Unconquerable". Diamond is a transparent gem made of carbon, which is one of the Earth's most common elements.  The diamond is the hardest known substance in the world. Billions of years ago, in a deep layer of the earth, a unique combination of chemicals, pressure and changes in temperature, created diamonds out of pure carbon.  The Diamond is uniquely resistant to damage by heat or scratching, and can be cut or polished only by another diamond. The diamond is thousands of times harder than corundum, the next hardest substance from which rubies and sapphires are formed. Even after many years of constant wear, diamonds will preserve their sharp edges and corners when most other stones will have becom...