Diamonds are the hardest natural substance known to man.
The first and most important consideration when buying a diamond is to choose a stone that you like. You want to buy a diamond that you expect will look good on you. Nothing you hear about value of a particular stone should influence you to buy it if you don’t like it.
The market assigns a value to a diamond on the basis of its carat weight, its shape, its cut, its color and its clarity.