What is the difference between rock crystal and crystal cultivation?
Crystal is a national defense mineral! Hehe, I don't know! It turns out that rock crystals will produce sustained and stable high-frequency oscillation after being electrified, so they can be used as oscillators for quartz clocks and many electronic instruments, many of which are even indispensable for the military. Therefore, national defense departments will pay attention to controlling the possession of high-quality crystals in case of emergency, but many countries do not produce crystals. What do we do? Therefore, we have developed a substitute for rock crystal "regenerated crystal", which is also commonly known as crystal cultivation. How to make the crystal grow? At present, the regenerated crystals produced in Japan are artificially cultivated by a method called hydrothermal method. The basic principle is the same as that of crystal rock, that is, one is China and two is China. A large amount of "anhydrous silicic acid" is injected into the giant barrel of a three-layer solid blast furnace, and silica is added. The bottom is heated to about 500 degrees Celsius, the upper part is kept at about 360 degrees Celsius, and the pressure is kept at 2-3 times of the standard atmospheric pressure. In this solution, the "crystal nucleus" attached to the crystal is suspended, which acts like the cotton thread of crystal sugar crystallization! Nuclei are mostly made of sliced rock crystals or recycled crystals. The crystal nucleus is a bit like a transparent ruler of about 20 cm. The crystals are attached to both sides of the crystal nucleus and crystallize outward. The original ruler was sandwiched in a recycled crystal bag. Rock crystals and crystal growth have the same elements, the same growth direction, the same hardness, specific gravity, refractive index and even birefringence. From the perspective of electronic parts, crystal growth is indeed much cheaper than nature, easier to obtain, more stable in quality and standardized in size.
So there is no way to distinguish between rock crystal and crystal cultivation? Actually, it is not. Crystal cultivation is purely artificial regeneration, and all aspects of the structure are standardized and standardized. Rock crystal is a masterpiece of nature. When the crystal grows in the natural environment, it can be found that the growth line is parallel to the cylindrical tip. Because of the small growth space in underground and caves, especially in the event of earthquakes or crustal changes, they are even easily squeezed by other minerals, and different "crystal planes" often appear. Also, when crystals are still in liquid state, they are often wrapped by other minerals and marls and grow together, such as rutile (which will become crystals later), volcanic marls (which will become phantom crystals later) and so on. These are "part of nature", please don't treat them as "flaws". The simplest way to identify is to observe with your eyes. Rock crystals usually have cotton-wool inclusions, while artificial crystals do not. You can also touch the crystal with your hands. The temperature of crystal stone is usually much lower than that of artificial crystal.