Quartz is the second most common mineral found within the earth’s crust. While common Quartz is found in practically every region of the globe, gem quartz which is known to produce beautiful and rare precious stones are found in a few regions. Quartz is made from silicon dioxide and it can be found in almost any type of rock type. Because quartz and gem Quartz are fairly common items, they are used in many ways. For instance, gem quartz comes in many varieties and includes wonderful precious stones such as Amethyst, Citrine, Jasper, Agate, Onyx, Sardonyx and Chert.
Quartz is also used for many industrial items such as TV tuners, radio receivers, watches and other types of electronic devices. Because quartz doesn’t have a center of symmetry, it is able to resonate at a specific frequency which is highly useful in the field of electronic engineering.
For the most part, there are two different types of gem Quartz’s; they are large crystal quartz and very small crystal quartz. Large quartz, are stones in which you can see the crystal growth and are usually translucent to transparent. These stones include most notably Amethyst and Citrine. Amethyst usually comes in beautiful purple and violet colors. Citrine is known for its beautiful yellow colors.
Grainy or small crystal gem Quartz are materials that have crystal structures that can’t be seen by the naked eye. They are usually opaque in appearance. Notable grainy or cryptocrystalline gem quartz includes Agate and Onyx.
For jewelry buyers, Quartz is one of the best stones to choose when buying jewelry, they are extremely beautiful and perfect for being set in a ring, for bracelets, earrings and for charms.