How to distinguish the difference between diamond and zircon

Diamond is a homogeneous body, completely black under the cross-polarizer, and has high hardness; while zircon appears four bright and four dark under the cross-polarizer. Diamonds are oleophilic. A ballpoint pen can easily leave uninterrupted traces on the diamond. Of course, this trace can be a homogeneous body, which is completely black under the orthogonal polarizer and has a large hardness; while the zircon is orthogonal Four bright and four dark appear under the polarizer. Diamonds are lipophilic. A ballpoint pen can easily leave uninterrupted marks on the diamond. Of course, this mark can be easily wiped off when you look back. Zircon is not lipophilic, and ballpoint pens cannot leave uninterrupted marks on the surface. Traces of clarity.　　 Zircon is naturally formed, and zircon is also a natural gem. Generally used to imitate diamonds. But the common diamond-like jewelry in the general market is not zircon. It is a synthetic cubic zirconia named'cubic zirconia'.　　 Cubic zirconia is also called zircon by salespersons. It was first synthesized by scientists of the former Soviet Union in the 1970s. Its physical and chemical properties are similar to diamonds, and the appearance is more similar, so it is also called 'Soviet diamond'.　　 Similarly, cubic zirconia is also not lipophilic, and ballpoint pens cannot leave uninterrupted sharpness marks on the surface.　　1. Observation of color light　　 Observed under a magnifying glass, the diamond surface often has triangular growth points and grooves, and the waistline presents a very fine frosted shape with bright reflections. This characteristic of diamonds is unique. Although zircon has high hardness and good refraction, it will reflect more colored light when rotating, while diamonds only reflect weak yellow and blue colored light when rotating, which is a significant difference.　　2, Observe the cut surface　　Under normal circumstances, the hardness of zircon is not as high as that of diamond. Observed under a magnifying glass, the cut surface of the diamond is as bright as new, while the cut surface of zircon generally has small pits.　　3, transmission line　　Because the diamond cut is usually standard, almost no light can pass through the pavilion facets. In view of the diamond's total internal reflection, straight lines cannot be seen, and zircons twist the straight lines. However, when encountering artificial titanic acid and synthetic rutile, black lines are not visible, so this method should be used with caution.　　4. Water holding test　　 Clean both the diamond and zircon, and then drop water droplets on their respective countertops. If the water droplets can stay on the surface of the sample for a long time, it means that the sample is diamond; if the water droplets disperse quickly, it means it is zircon. But this method is not suitable for small groans without disease.　　5. Look at the picture method　　 Put the diamond table upside down in a glassware and add water to the height of the bottom tip of the diamond. Use a concentrated light source to illuminate the bottom tip vertically. When the container is removed a certain distance from the load. A radiant image can be seen on the background of the underlying object, and the radiant rays are far from the center of the light domain, unlike the image of zircon, the rays of light are intertwined with the light domain. The above is about the five methods to distinguish zircon and diamond. Observation of lighting, section, projection line, water holding test and drawing method. The information comes from the Internet. If there is anything wrong, please understand. If you need knowledge of diamond and zircon, Please pay attention to jewelry setting, jewelry setting is waiting for your inquiry!