There are many kinds of diamonds known to us today. Some are transparent, others translucent or opaque; ranging from colorless to sooty black, with many colors in between. Transparent or slightly tinted diamonds are most often used in jewelry. The others are more widely used in industry. The color of a diamond depends on the kind and degree of internally embedded impurities. Yellow diamonds have minute traces of nitrogen, boron imparts a bluish hue and these natural impurities have created the fascinating palette of the increasingly popular fancy diamonds.