The uncut, rough, real and natural diamond crystals are used for making diamond crystal jewelry. These diamond crystals have a natural sparkle and can be used in making jewelry without faceting. Major companies of diamond jewelry have their own lines of diamond jewelry. The faces of some of the diamonds used may be flat and planar and may look dull. Some diamonds may have an attractive surface luster like that of satin but with no internal sparkle. The best natural diamond crystal jewelry has complicated crystal faces such as striations, trigons or those with unique shapes with an internal sparkle. Color of diamond should be selected by considering the surrounding setting color. Yellow and brown diamonds should be contrasted with white metal.