Evidence that Crystalline Silica causes lung cancer in humans and Silica, Quartz cause lung cancer in animals. A carcinogen. Such substances may also have the potential to cause reproductive damage in humans. Not harmful. Effects of Long-Term (Chronic) Exposure: VERY TOXIC. It can cause lung damage if the dust is breathed in. Symptoms may include shortness of breath, chronic cough, and weight loss. Quartz is one of these piezoelectric crystals. By squeezing and stretching it, it generates a slight electrical potential difference between its ends by rearranging its charges. A usable micro-current can be formed if a cable is connected between them. The crystal will oscillate at a desired frequency if it is accurately shaped and positioned. In nearly all quartz watches, the frequency is 32768 Hz, and the crystal is cut in a small tuning fork shape on a particular crystal plane. As discussed, the rose quartz stone has amazing skin-soothing properties. Therefore, gently rubbing this roller on your skin helps to relax all the tense muscles and facial expressions. Therefore, regular use helps soften the appearance of those fine lines and wrinkles. Quartz is an electrical insulator, as its crystal structure has no freely movable electrons like in metals. It is easy to know when a domed or domeless quartz nail is heated up because you will see flecks of red that will start to glow in the quartz itself. It would be best not to heat quartz until the bottom is red because this will make your nail too hot. If you are looking for high quality, high purity, and cost-effective Quartz powder, or if you require the latest price of Quartz powder, please feel free to email contact mis-asia.