When you look at this shiny compound, it makes you think of gems and jewelry. (Not my favorite subject, but it it is important to you females none the less.) I'm thinking of quartz, the second most abundant metal in the world. Its chemical symbol is SiO4, which means its basic chemical structure is made out of Silicone and four oxygen atoms. Its magical name came from the German/ Slavic word "twarc", which means hard in various translations. It is a silicate metal, and colors can be almost anything from white to black to blue to purple etc. It is brittle, which means it is easy to break. Many variations can be precious gems such as the Rose quartz, the onyx crystal, the agate gem, and the tigers eye.
-Below are pictures of quartz. Sources. Wikipedia.