Diamonds are a rare and extremely reflective natural mineral, known to touch a woman"s heart. They are the hardest natural mineral on earth, which makes them perfectly suited for everyday wear in jewelry like engagement and wedding rings. Most people think of diamonds as colorless and transparent, however diamonds are found in many different colors, the most common of which are yellow and brown. In between these colors a number of variations exist and these are known as "fancy color diamonds". Diamond’s exceptional properties arise from the crystalline structure, in which carbon atoms have essentially the same arrangement in all directions, and in which bonding between the carbon atoms is immensely strong and uniform. This accounts for diamond’s incomparable hardness. Anyone who begins to research buying or selling diamonds will encounter references to "The Four C’s," therefore it is important that you understand their implications in selling diamonds. The C’s stand for carat weight, color, clarity and cut.