Clear Quartz also known as Rock Crystal ranges from white (opaque) to clear (transparent), and belongs to the rock crystal family of stones. All rock crystals are composed of SiO2 They form according to a trigonal crystal structure, and have a hardness of 7 on the Mohs scale.
The pyramid as a shape is based on sacred geometry. Most often associated with the ancient Egyptians, but has been used by many cultures. Metaphysically, pyramids can be used to generate and focus energy. They are perfect for programming (dedicating to a specific purpose), and are said to help us to reach our goals, by helping us to focus energy to bring things to a point or culmination. They can also be used to charge water or other crystals.