Identification of diamonds

Because diamonds have a very high value, people began to carry out the diamond trade, the imitation appeared. Therefore, the accurate identification of diamond, identify fake diamonds, is very important. Because diamond has a special nature, it is not difficult to accurately identify it. The earliest diamond imitation, is a plus lead oxide ordinary glass, lead oxide makes the glass soft, but increased the refractive index and enhance the dispersion, at first glance is easy to mistaken for diamonds. In the late 19th century, there was a diamond imitation made of chemically synthesized sapphire and colorless spinel, which was close to diamonds, but had low refractive Replica Cartier jewelry index and dispersion, and had a double refraction rate that was visible under high magnifying glass To ghosting, whereby we can distinguish it from diamonds. Today’s most successful diamond imitation, is the artificial cubic zirconia, its hardness, good refraction, but also like most of the same diamond some yellow. According to the diamond has a great hardness of this feature, you can accurately identify the diamond. Identification of diamonds usually requires the preparation of a piece of artificial sapphire fragments, or larger particles of artificial silicon carbide (emery) crystals. They must have a smooth plane. Artificial sapphire hardness of Mo’s 9, silicon carbide hardness of 9.5, are the hardness of the material after the diamond.

For the suspected diamond material, it can be used to carefully characterize the smooth surface of artificial sapphire or silicon carbide, if you draw on their smooth slippery, did not draw any scars, it must not be diamond. If the material to be tested can easily be scratched on the smooth surface of synthetic sapphire or silicon carbide (observe the scar can be used magnifying glass), it must be true diamond. At this point, in turn, with artificial sapphire or silicon carbide sharp corners to characterize the diamond, found only slip, absolutely no scratches, which once again proved that the diamond is the real thing. For diamonds that have been ingested into diamonds and even embedded in jewelry, you can also carefully use it to characterize the smooth plane of artificial sapphire or silicon carbide to determine whether it is genuine. If it can not be in the artificial sapphire or silicon carbide to draw scars, that is false diamonds.

In addition, in addition to test hardness, but also for the following observation test: whether true or false diamonds, its surface appears to be unusually bright, and flashing color of the brilliant. Can be really diamonds on the fat affinity is very strong, shiny smooth surface, such as by hand touch, immediately stained with a layer of grease, so that the degree of light weakened.

In addition, you can use the tongue to identify the authenticity of diamonds, that is, with tweezers clamped with tongue licking, because diamonds can quickly transfer heat, so licking up feeling cool, and compared to imitation products can feel hot. There is also a phase method is to be hailed by the other objects, in the diamond on the condensation of water mist faster than in the imitation of evaporation. Because diamonds have a very high thermal inertia, heat can be quickly added up.

It is also an effective way to identify the authenticated diamonds by observing the waist of the identified object with a magnifying glass. In the fine grinding of the diamond waist, showing a very fine matte and shiny reflected light, this feature of diamonds is never confused with its imitation. In the diamond can also be formed by a lot of hair cracks in the waist, which is unique diamond features. Diamonds often have some “natural features”, such as in the crystal face of the groove, triangular growth and so on. These are diamond imitation on the see.

Really diamonds are often lighter than fake diamonds, feel lighter, are really diamonds. Really diamond, in the dark place to send shabby green, like a spark on the wire. If it is false diamond, can only send a small amount of white, or even light. Even if the light, it is also very dull, there is no phenomenon of alternating. We can also put two diamonds together on a black paper, you can see the natural diamonds remain glorious, while the artificial diamonds are not glorious, and glass is very similar.

Refractive index and dispersion is an important basis for the identification of natural diamonds and synthetic diamonds, but generally easy to use the naked eye identification, can only be measured with the instrument. Everyone in the identification, the best use of several Cartier nail bracelet replica methods, so that more reliable. In any case, in the choice of diamond jewelry, be sure to carry out in a reputable store, the higher price of diamond jewelry, to carefully check the diamond identification book, after comparison to consider the purchase. The distinction between genuine and fake diamonds, the distinction between good and bad diamonds, most of the consumer self is still very difficult to carry out, so more to find a reliable expert for the staff, must not listen to others to encourage the purchase of no certificate or reputation Of diamond jewelry. In general, the current state-owned jewelry store in the supply of diamond jewelry, have been expert identification, the sale of fakes or substitutes of the situation is minimal. As for the price, the store due to the purchase channel and the quality of different, there is a difference, which requires their own choice and decide.

  1. Gemstone treasures – colored ruby

Ruby is precious and precious in precious stones. People may find a huge pure diamond, but never heard of anyone who discovered a huge pure ruby. Things are rare, not to mention it itself has a bright color. As early as << early in the book >> it was so cherished: “only the value of wisdom is higher than the ruby.” European monarchs competing in the crown inlaid rubies for the glory. For the monarchs of Asia, rubies have historically been a symbol of wealth and power.

Ruby is corundum, hardness of 8.8 to 9. Ruby contains chromium oxide, such as the content of about 1%, the color is early to clarify the most beautiful. Most of the rubies contain gold red, so the ruby ​​surface was fingerprint pattern, it is more beautiful. Ruby is a natural mineral, sometimes somewhat flawed, color or color uneven, but this does not affect the beautiful appearance of rubies, as long as the flaws are not very obvious, it will not affect the value of the ruby ​​itself.

Ruby is a common pink, rose red, purple, blood red, dark red and so on. Ruby the higher the amount of chromium, the deeper the color. The most expensive varieties are two: a “pigeon blood red” ruby, it bright red as blood, in the incandescent light, glamorous brilliant, such as , and like sunset. Large particles are rare treasures, and even priceless. Usually, high-quality ruby ​​1.2 carat is treasures, each carat worth more than 30,000 US dollars, more expensive than ordinary diamonds. According to records, the world’s largest pigeon blood red ruby ​​weighs only 55 carats. Another treasure is “pomegranate seed” ruby, it is crystal transparent, and pan-red, like light red pomegranate seed, the particles are not large. Red ruby ​​is also high quality, but the color is dark or too light, the quality is poor. Ruby, if starlight, then the price is more increased.

Ruby is a treasure of oriental civilization, famous origin in Myanmar, Thailand, Sri Lanka. Its Sanskrit name is “the crown of gems” means. The British crown weighs 167 carats of ruby, the Iranian crown 84 ruby ​​buttons, are Myanmar products, produced in the Jiesha County wipe the valley, the resources are few. Thai rubies are dark red

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