These marks make each stone unique, for no two diamonds have the same inclusions in the same places. When inclusions do not interfere materially with the passage of light through the stone, they do not affect its beauty. However, the fewer the inclusions, the more valuable the diamond. Cut - Diamonds are cut according to an exact mathematical formula. Cut also deals with the shape of the diamond.
Traditional shapes are round, emerald, marquise, pear, oval and heart.
Your diamond engagement ring marks the beginning of your life together. And, it will remain a symbol of your love and commitment to marry. Your first decision, even before you look at any rings, is how much you will be spending. A good rule of thumb when buying a diamond engagement ring is to set aside two months' salary. Think of the many purchases you make for your home and yourself which don't last, which depreciate as they are used, and which you will have to re-purchase several times.