Crystal is a member of the quartz family and is one of the most common minerals. Usually formed in igneous rocks, metamorphic rocks and sedimentary rocks, the chemical formula Sio2, Mohs hardness is 7, the end of the crystal is rhombohedral columnar or pyramidal, crystal face usually has stripes and glass luster, rich in inclusions. In general, the higher the color, the brighter the color, the higher the clarity and refractive index, the higher the value.
The main component of diamonds is carbon (C), which contains 96% to 99.9% of C. Even very pure diamonds contain 0.001% impurities. The impurity components in the diamond are Si, Al, Ca, Mg, Mn, Ti, Cr, N, and the like. Except for N, the impurities are usually in the form of mineral inclusions. Diamonds often contain mineral inclusions such as magnetite, ilmenite, magnesite, chrome diopside, olivine, and graphite.
First of all, diamonds are one of the hardest known gemstones, so you can know that you can use a diamond to sculpt corundum. Oily test: a special pen or ballpoint pen with an oil-based ink in the diamond A line drawn on the countertop will leave an uninterrupted line. Other imitations are not lipophilic, leaving intermittent dotted lines at the score line.
Water Drop Test: Water drops on the diamond will remain spherical for a long time, while water droplets on the imitation will spread out in a relatively short period of time.
Harmonic test: In the diamond, the water vapor on the diamond immediately disappears into a true diamond; if the water vapor stays on the diamond for a few seconds, it disappears into a fake diamond.
Feeling test: When using a tongue to touch a diamond and its imitation at room temperature, the diamond is much cooler than the imitation. It is very simple to identify it. It is placed on a piece of wired paper, inverted, and Face down, through it can not see the line, if it can be imitation, natural diamonds are invisible. This method is very simple. Use "diamond pen (also called thermal conductivity meter)" to distinguish, this is simpler science.
As for the difference between crystal and glass, crystal is a heterogeneous body, and glass is a homogeneous body. It can be effectively distinguished by a simple double polarizer. But nowadays, few people use glass to imitate crystal, more Synthetic crystal, the way to distinguish between synthetic crystal and natural crystal is: synthetic crystal has "crystal nucleus (a kind of vertical appendage)" and natural crystal does not. In addition, the color of synthetic crystal is uniform, and the type of inclusion is monotonous. The difference between natural crystals. The price is very different. One carat diamond can sell tens of thousands of pieces, and one carat crystal may be around one hundred yuan.
What is a diamond? It is well known that diamonds are regarded as the most precious gemstones in the world with their crystal clear, dazzling and hard quality.
Known as the "king of gems". But what if you asked about diamonds? Maybe you can't answer them right away. Diamond refers to diamonds that have been honed. Diamond is a natural mineral that is the original stone of diamonds, but sometimes people do not subdivide the two.
Simply put, a diamond is a simple crystal composed of carbon (C) elements formed under high pressure and high temperature in the deep earth. It is the most beautiful and expensive material and wealth that nature has given to mankind. Although human civilization has a history of thousands of years, people have only discovered and initially understood diamonds for only a few hundred years, and the time to truly reveal the inner secrets of diamonds is shorter.
Before that, it was only a mythical legend, a religious cult and fear, and at the same time regarded it as a symbol of courage, power, status and honor. Today, diamonds are no longer so mysterious, and they are not treasures that only the royal family can enjoy. It has become a popular gem that all people can own and wear. The culture of diamonds has a long history, and today people see it more as a symbol of love and loyalty.
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