Silicon specimens,USA M890 - Silicon specimens,USA. Shiny, silvery, Silicon specimens. Silicon (Si) is extracted from quartz (Silicon Dioxide). It is a light chemical element that combines with oxygen and other elements to form silicates. Silicon in the form of silicates constitutes more than 25% of the Earth's crust. Silica, as quartz or quartzite is used to produce silicon ferroalloys and silicon metal. Silicon is the principal component of glass, cement, ceramics, and most semiconductor devices. Silicon is commercially prepared by the heating of high-purity silica, such as quartz crystals, in an electric arc furnace using carbon electrodes. Made is USA. Every rock collection needs one of these!   Price: $3.95 per piece (You can always remove items from your cart later if you wish)