Quartz is a power stone, and has been called as well as considered worldwide as the “Universal Crystal”. It is the most recognized type of crystal, and what many people envision when the thought of “crystal” comes to mind. In fact there are many different types of Quartz, in quite a variety of colors. “Rock Crystal” Encompasses a large family of stones and crystals, all of which are made up primarily of silicon dioxide, one of the most common and most important substances in the world. Crystals of pure Quartz,generally six-sided, can be found in all shades and colors. Quartz crystals grow singularly or in groups and take on different shapes according to the temperature at the time of their formation. Quartz crystals can also contain other minerals “frozen” within, as in Rutilated. Quartz can be formed of microscopic crystals and take on entirely different appearances and qualities. Quartz can be a bit of a confusing stone, as it encompasses a great many varieties that often are thought to be gemstones on their own, but are in fact another type of quartz. As well, within this family there are other stones, which have their own little “families” as well.