When buying diamond jewelery there are several criteria you should consider. These criteria are the four C's - carat, clarity, cut and color. Deduction refers to the proportion of the diamond and corners that create a diamond cutter in the stone to polish it and maximize the brilliance and is the only one of the diamond's defining qualities that is not created by nature.Diamond jewelery comes in various shapes such as oval, pear, emerald, heart, Marquise and princess. Diamonds are cut too shallow or too deep will result in a bad diamonds because...