Quartz Juwelo
Chemical composition of Quartz. Quartzes are composed of silicon oxide, and are divided into two major categories: macrocrystalline Quartzes, such as Amethyst, Falcon’s Eye, White Quartz, etc., which present as single large crystals, discernible with the naked eye, and microcrystaline Quartzes such as Agate, Jade and Carnelian, which have small crystals.