According to reports, IF cleanliness is generally the highest level that can be seen, because FL means flawless, and certificates generally do not give such a conclusion. This means that this diamond has no detectable tip larger than 5 microns. No one is perfect, and so are diamonds. There is no diamond without any impurities in the world.
Generally speaking, value-added diamonds (that is, diamonds that do not need to be traded and have nothing to do with demand, but only increase in value with international quotations every year) are mainly VVS. Of course, the bigger the particles, the smaller the output, and the greater the chance of value-added. If you want to invest in value-added diamonds when you get married, the clarity should be between VS-VVS, and the particles should be above 50 points. The higher the color, the better the cutting, and the more valuable it is. And if you only need casual diamonds, then SI grade is undoubtedly the most cost-effective and wise choice. Class I diamonds can already be seen with the naked eye, but if the defects do not affect the appearance, the cheap price is a big selling point. For example, Americans like Class I diamonds with a size of 1 carat or more, which are large and economical.
We know that the price of a 1 carat diamond usually ranges from 30,000 to 40,000 to 200,000. Such a huge price span has also puzzled many customers. In fact, as long as you have a certain understanding of the 4C of diamonds, you can understand the reason for this huge price difference. Therefore, if you want to buy real carat diamond products, you must find a reputable and powerful shop to buy them. The quality of the 1 carat diamond bought for 30,000 yuan is definitely different from that of the 1 carat diamond bought for 70,000 yuan, and as long as you can read the certificate, these differences are not only recognized by experts. However, if it is clear that the carat diamond bought for 30,000 yuan does not preserve the value, but is only used as an ornament, then you can buy it boldly.
Distinguish several common fake diamonds
Distinguish between several common fakes and topaz: the transparent crystals of these two natural minerals are also a bit like diamonds after pondering, but they both lack flickering color light. And they are all "anisotropic bodies", while diamonds are "isotropic bodies", which can be easily distinguished by a polarizer.
Artificial sapphire: colorless and transparent artificial sapphire, which can also be used as a substitute for diamonds after pondering. But it almost disappears in "diiodomethane", and the real diamond edge is black and very clear.
Zircon: Zircon was the best diamond substitute before the appearance of artificial cubic zirconia.
Zircon has strong birefringence, that is, it has two refractive indexes, and the two refractive indexes are quite different. Therefore, a very special optical phenomenon is produced. When the polished zircon faceted gem is observed with a magnifying glass, it can be seen from the top surface that there is obvious ghost between the bottom surface and the ridge line. And diamonds, because they are "isotropic", are absolutely invisible.
Synthetic rutile: Rutile is a common natural mineral, and its composition is titanium dioxide. Because its refractive index (2.6 1-2.90) is higher than that of diamond (2.42), the polished gem can show bright and dazzling flashes and rainbow-like changes, and it looks very beautiful. Unfortunately, natural rutile is almost opaque, so artificial rutile was first produced by American lead company in 1947. Among them, colorless and transparent ones are used as diamond substitutes or counterfeit products, and their color flashes are more than real diamonds, which are often called "multicolored diamonds" or "multicolored diamonds". But rutile, like zircon, can be easily distinguished from diamond because of its strong refractive index, and the obvious double shadow of the bottom ridge can be seen from above with a magnifying glass.
Cubic zirconia: (that is, "Soviet diamond"): This is the most ideal diamond substitute or imitation first introduced by the former Soviet Union. This is an artificial compound, which contains no natural minerals. Since the advent of cubic zirconia, many other artificial gem raw materials have only been used as substitutes for other low-grade gems, instead of polishing counterfeit diamonds. This is because cubic zirconia is very close to natural diamond in refractive index and dispersion. But its hardness is low (8.5), its specific gravity is 5.6-6 times that of diamond, and its thermal conductivity is much lower than that of diamond, so it can still be accurately distinguished from diamond by instruments.
How to keep the luster of diamond ring
How to maintain the diamond ring to keep its luster? Smooth diamond rings not only reflect light better, but also look brighter than those with skin oil, soap, cosmetics and kitchen oil stains. Diamond rings are sticky to grease, so they should be washed once a month to keep their luster.
Method of keeping diamond ring bright 1: Method of cleaning with cleaning solution: Fill warm water in a small bowl or teacup and mix a proper amount of neutral detergent in the water. Soak the diamond ring in water, brush it gently with a toothbrush, then wrap it with a sieve, rinse it with warm water under the tap (and finally pat it dry with a soft cotton-free flannel).
Method 2 to keep the diamond ring bright: cold water immersion method: use a small bowl or teacup, mix with appropriate amount of clean water and household Armenian water, soak the diamond ring in water for about 30 minutes, then gently brush the diamond ring around and back with a small brush, then wave it in the water for a while, and then take it out and dry it with a paper towel.
Other ways to keep the diamond ring bright: when doing housework, don't let the diamond ring jewelry be stained with chlorine bleach, which will not damage the diamond ring, but will make the inlay fade or change color. Don't wear a diamond ring when washing dishes or doing rough work. Although the diamond ring is hard, according to its grain direction, it may be damaged if it is hit hard. Take your diamond ring jewelry to the jeweler once a year to check whether the inlay is loose and worn, and then fix and polish it again.
How to choose the diamond ring that suits you?
Love, wedding, diamond, what sweet and happy words, having a delicate and fashionable diamond ring of their own has become the best dream of every bride. But you may not know that each diamond ring has its own unique charm and gives it different meanings. So, how to choose a fashion diamond ring that suits you? Let's take a look at the following fashion diamond ring wearing rules.
The most practical choice: dedication ring. A pair of exquisite fashion diamonds are given to you and me, and a romantic code word belonging to you and me is engraved on the outer ring as an eternal promise that you and I have been waiting for all our lives. If you feel that the magic released by the Lord of love is not enough, use more magical words to carry the sustenance, English, bronze or Greek. ...
The most affectionate choice: unrequited love. The engagement or proposal ring belongs only to the bride. The shiny multi-claw single diamond is a classic style, which can best reflect the purity and beauty of diamonds and is also regarded as the most sacred token in marriage proposal. Many brides like this style. When buying, we must pay attention to the mosaic technology and the reliability of mosaic. Diamond rings are most easily scratched by hard objects. When extracting similar items, pay attention to the ring.
The brightest choice: more infatuation. The multi-diamond style is gradually recognized by people, with diamonds large enough to stand out, surrounded by dense small broken diamonds. The shiny luster of diamonds and the dense fine diamonds are more prominent and particularly bright. The design of multi-diamonds mostly adopts half-package or full-package inlay, so brides who choose these diamond rings should pay more attention to where they wear them. Don't wear it in dusty places. Diamonds are pro-oil, so try not to put them in a kitchen with a lot of fumes.
The most fashionable choice: unique shape. The special design is the fairy tale design in the wedding ring. The maverick design can make you always remember the happiness at the moment you received the ring, which is eye-catching. The unique fashion diamond ring is a wonderful diamond ring that often shines. This type of ring is usually irregular in shape, so care should be taken not to be damaged by external forces. Usually, it should be given to a trusted jeweler for regular maintenance to check the firmness of diamond inlay and remove impurities. When storing, don't put it in the jewelry box with other jewelry to avoid being hurt.
Which is more suitable for your temperament and mind? Do you choose "single-minded", "single-minded", "obsessed with drilling more" or "unique style" In this colorful summer, let the bright light of diamonds witness the sweetness of your love and the happiness of your marriage.
What kind of diamond is a good investment?
What kind of diamond is good for diamond investment? Big enough and bright enough or something?
How to make money by speculating in gold? Expert guidance bank gold and silver TD account opening guide is free. Bank gold and silver simulation trading software set gold digital desktop quotation tool. Diamonds are a rare resource. With the decrease of diamond production, the most direct result is the continuous increase of diamond prices in recent years. Even so, Kunming people all know that the price of high-quality diamonds will continue to rise in the next few years.
As the chairman of the international authoritative diamond certification body, Bryce also made some suggestions for China consumers to buy diamonds. He said that not all diamonds have investment value, and only high-quality cut diamonds of big brands are worth collecting. "The price of cutting diamonds will be about 40% higher." Diamond investors deeply agree with his cognition.
Belgium is known as the "diamond kingdom" and Antwerp is world-famous. Bryce suggested that consumers should choose Belgian high-quality cut diamonds when buying diamonds. At the same time, we should try to choose big brands, so as to ensure the quality of diamonds.
How to choose a satisfactory colored diamond?
Married, of course, need a unique diamond ring as a witness of lovers' love. Colored diamonds are especially precious because of their rarity. Friends who want to buy colored diamond can look at the following two tips, hoping to help you choose a satisfactory colored diamond.
How to make money by speculating in gold? Experts guide banks to open accounts in gold and silver TD for free. Bank gold and silver simulation trading software, gold collection number desktop quotation tool.
1, be careful that "variegated color" becomes "solid color"
In order to get the maximum benefit, many unscrupulous businessmen often sell yellow and white diamonds with low color grade and hidden impurities as yellow diamonds, and the wholesale price of these diamonds is much cheaper than that of white diamonds of the same grade. Yellow diamond and yellow and white diamond are completely two concepts. Fake yellow diamonds tend to be dark yellow and light in color, if any, but real yellow diamonds emit bright yellow or yellow light close to gold.
2. Quasi-authoritative evaluation institutions
The selection of colored diamond is very important for the selection of appraisal institutions. At present, GIA is the most famous and authoritative appraisal institution in colored diamond. Other famous laboratories include European Jewellery Laboratory (EGL), Belgian Diamond High Council (HRD), American Gemological Society (AGS) and World Gemological Society (IGI). Almost 65,438+0/3 diamonds in the world have been identified by these laboratories.