Diamond facts-Not all diamonds are white

Diamond factsA diamond is the hardest natural substance on earth, but if it is placed in an oven and the temperature is raised to about 763 degrees Celsius (1405 degrees Fahrenheit), it will simply vanish, without even ash remaining. Only a little carbon dioxide will have been released.Diamonds are formed over a period of a billion or more years deep within earth’s crust – about 150km (90 miles)