Quite a lot Friend When buying shoes, buttons, shoes, flowers and other accessories, people often hear the salesman talk about the word "water drill". At this time, many friends will ask "diamond" what it is, and I want diamonds. We must understand that making shoes and shoes buckle is originally a small shoe shoe buckle. The price is seen in our eyes. It is a kind of imitation diamond, which is wear-resistant and durable, with various styles, novelty and uniqueness.

"Diamond" is only a generic term for imitation diamonds, but there are many differences between "diamond" and "diamond". So what is the so-called "water drill"? It has something to do with real diamond. What What's the difference between them? The following are the types of "drill" that we usually see on the market:

1, glass: it is easy to distinguish false diamonds from glass, because its refractive index is low, and there is no glistening color of real diamonds. And this kind of "drill" is often used in cheaper accessories.

2, artificial spinel: it lacks the color of the diamond flashing light, immersing it in two iodine methane, its outline will be blurred. The outline of real diamonds is very clear.

3, sapphire: colorless Transparent Artificial sapphire can also be used as a substitute for diamonds after consideration. But it almost disappeared in "two iodine methane", while the edge of real diamond was dark and very clear.

4, crystal and Topaz: the transparent crystals of these two natural minerals are similar to diamonds after being processed, but they lack the brilliance of diamonds. And they are all "heterogeneous plastids", while diamonds are "homogeneous bodies", which are easier to be distinguished by polarizers.

5, zircon: zircon is the best diamond substitute before the emergence of artificial cubic zirconia. Zircon has a strong birefringence, that is, it has two refractive indices, and the difference between the two refractive indices is quite different. A special optical phenomenon has been produced. When magnifying glass is used to observe the gemstones of the zircons, the top faces can be seen that there are obvious double shadows on the bottom surface and the ridge lines. Diamonds are not homogeneous because they are "homogeneous bodies".

6, cubic zirconia ("Soviet Union drill"): This is the ideal diamond substitute or counterfeit which was first introduced by the former Soviet Union. It is an artificial compound without natural minerals. Cubic zirconia is very similar to natural diamond in terms of refractive index and dispersion. However, its hardness is relatively low (8.5). Its specific gravity is 1.6 to 1.7 times that of diamonds, 5.6 to 6, and its thermal conductivity is much lower than that of diamonds. Therefore, it can be accurately distinguished from diamonds by instruments.

The most important thing to buy "water drill" is to look at luster. In general, diamonds are incomparable to diamond in natural light, but there are exceptions, such as strontium titanate fake diamonds and mullite, even more than real diamonds.