What are the parameters of diamond rings and how are they divided?
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What are the parameters of diamond rings and how are they divided?
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4C parameter
"4C" is the standard for judging the value and quality of a diamond. The so-called "4C" is the abbreviation of four English words beginning with C, which refers to carat weight, clarity, color and cut of diamonds. You can easily understand the value and quality of a diamond by integrating the four points of "4C". Diamond price = weight Color clarity cut
I. weight:
the weight of diamonds is calculated in carats (also known as carats). 1 carat = 200 mg = 0.2 G. A carat is divided into 100 parts, and each part is called a cent. 0.75 carat is also called 75 points, and 0.02 carat is 2 points
under other similar conditions, the value of diamond increases in geometric series with the increase of diamond weight; The value of diamonds with the same weight will vary greatly due to the difference in color, clarity and cutting
in every different size and shape, you can find high-quality diamonds. The most important thing is to find a diamond with the right size and style that you like. You may as well try it on in the jewelry store. When it looks and feels right, it will be yours
II. Cleanliness:
diamonds are crystallized in the mantle magma deep in the earth. The environment is complex, the components are diverse, and the temperature and pressure are extremely high. After hundreds of millions of years of geological changes, it is inevitable that there are various impurities or defects in the diamond. The color, quantity, size and position distribution of these inclusions have different effects on the diamond clarity
the cleanliness of diamonds is usually graded by using a 10 times magnifying glass to assess the internal and surface defects of diamonds and their impact on the luster. The cleanliness of non inlaid diamonds is divided into 10 levels according to the standards of China National Inspection: LC, vvs1, VVS2, VS1, VS2, SI1, SI2, P1, P2 and P3
the inlaid diamonds are divided into five grades: excellent, very good, good and good. Class P drill is also called class I drill. Generally, the diamond below grade P is not used as gemstone, so it is generally only divided into grade P and no longer divided into P1 / P2 / P3
If, VVS, vs, Si and P are commonly used in the world as follows:
(1) if is perfect and flawless, and LC is used in China, that is, no defect can be seen under a ten fold magnifying glass. Please remember: it is impossible to give this grade to domestic inlaid diamonds
(2) VVS is subdivided into vvs1 and VVS2. V = very, VVS - very, very small inclusions - needle like inclusions that are extremely difficult for professional diamond graders to find under a 10x magnifying glass
(3) vs is subdivided into VS1 and VS2. The inclusions in VS2 are larger than those in VVS. It is difficult for professional diamond graders to find them under 10x microscope. The inclusions in VS2 are more than those in VS1. Vs grade is the dividing line of high-quality diamonds
(4) Si is subdivided into SI1 and SI2, all of which are small defects. It is easy to see the defect SI1 under a ten fold magnifying glass, and a large number of points are divided into SI2—— No inclusions can be seen with the naked eye. Therefore, the naked eye above the Si level cannot distinguish the difference when buying diamonds
III. color:
diamonds have a variety of natural colors, ranging from precious colorless (white after cutting and grinding), rare light blue and pink to common yellowish. The more transparent and colorless, the more transparent the white is, and the more colorful it is after refraction and dispersion
the grading of diamond color is determined in the grading environment of the professional laboratory by the technicians repeatedly comparing the diamonds to be graded with the standard color colorimetric stones
the whitest diamond is set as D (i.e. starting from the first letter of diamond). The color of diamonds is divided into 11 levels, which are D, e, F, G, h, I, J, K, l, m and n
IV. cutting:
cutting of diamond refers to the accuracy of its cutting and grinding ratio and the perfection after finishing. Good cutting should reflect the brightness and fire color of the diamond as much as possible, and try to keep the weight of the original stone
the cutting grade of GIA is divided into ID (standard), ex (excellent), VG (very good) and G (good) from high to low. The national inspection of China is divided into ex (excellent), VG (very good) and G (good). The best cutting is "eight hearts and eight arrows". It adopts the world's top Cupid cutting and is the exclusive and original diamond cutting of CEMNI for the millennium. The perfect symmetry of eight hearts and eight arrows, the precise and flawless cutting is amazing
in China, ordinary people generally measure the value of diamonds by their weight. It's actually unscientific. Because small diamonds are popular in China. Therefore, the more popular concept is high-quality brilliant diamond. High quality and brilliant diamonds generally follow the three principles of 4C: clarity, color and cut, and the three standards should meet certain standards at the same time
extended data:
identification methods of diamond rings:
1. Breath test
breathe a breath on the diamond ring. If the water vapor on the diamond ring disappears immediately, it is a real diamond ring. If the water vapor disappears after a few seconds, it is an imitation
2. Water drop test
drop a drop of water on the diamond ring. If the water drop remains spherical for a long time, it indicates that the diamond ring is real. If the water drop spreads in a relatively short time, it is an imitation
3. Oily pen test
use a special pen or ball pen with oily ink to draw a line on the diamond surface of the diamond ring. If an uninterrupted straight line is left, it indicates that the diamond ring is real. And if there are intermittent dotted lines left at the scribe line, it indicates that it is an imitation. But the test in this way needs to be observed with a magnifying glass
4. White paper scribing test
draw a black line on the white paper, and put the surface of the diamond on the diamond ring on the line. If you can't see the line, it indicates that the diamond ring is real; if you can see it, it is false
reference source: Baidu Encyclopedia - diamond ring
4C parameter
"4C" is the standard for judging the value and quality of a diamond. The so-called "4C" is the abbreviation of four English words beginning with C, which refers to carat weight, clarity, color and cut of diamonds. You can easily understand the value and quality of a diamond by integrating the four points of "4C". Diamond price = weight Color clarity cut
I. weight:
the weight of diamonds is calculated in carats (also known as carats). 1 carat = 200 mg = 0.2 G. A carat is divided into 100 parts, and each part is called a cent. 0.75 carat is also called 75 points, and 0.02 carat is 2 points
under other similar conditions, the value of diamond increases in geometric series with the increase of diamond weight; The value of diamonds with the same weight will vary greatly due to the difference in color, clarity and cutting
in every different size and shape, you can find high-quality diamonds. The most important thing is to find a diamond with the right size and style that you like. You may as well try it on in the jewelry store. When it looks and feels right, it will be yours
II. Cleanliness:
diamonds are crystallized in the mantle magma deep in the earth. The environment is complex, the components are diverse, and the temperature and pressure are extremely high. After hundreds of millions of years of geological changes, it is inevitable that there are various impurities or defects in the diamond. The color, quantity, size and position distribution of these inclusions have different effects on the diamond clarity
the cleanliness of diamonds is usually graded by using a 10 times magnifying glass to assess the internal and surface defects of diamonds and their impact on the luster. The cleanliness of non inlaid diamonds is divided into 10 levels according to the standards of China National Inspection: LC, vvs1, VVS2, VS1, VS2, SI1, SI2, P1, P2 and P3
the inlaid diamonds are divided into five grades: excellent, very good, good and good. Class P drill is also called class I drill. Generally, the diamond below grade P is not used as gemstone, so it is generally only divided into grade P and no longer divided into P1 / P2 / P3
If, VVS, vs, Si and P are commonly used in the world as follows:
(1) if is perfect and flawless, and LC is used in China, that is, no defect can be seen under a ten fold magnifying glass. Please remember: it is impossible to give this grade to domestic inlaid diamonds
(2) VVS is subdivided into vvs1 and VVS2. V = very, VVS - very, very small inclusions - needle like inclusions that are extremely difficult for professional diamond graders to find under a 10x magnifying glass
(3) vs is subdivided into VS1 and VS2. The inclusions in VS2 are larger than those in VVS. It is difficult for professional diamond graders to find them under 10x microscope. The inclusions in VS2 are more than those in VS1. Vs grade is the dividing line of high-quality diamonds
(4) Si is subdivided into SI1 and SI2, all of which are small defects. It is easy to see the defect SI1 under a ten fold magnifying glass, and a large number of points are divided into SI2—— No inclusions can be seen with the naked eye. Therefore, the naked eye above the Si level cannot distinguish the difference when buying diamonds
extended data:
the weight of diamonds is calculated in carats (also called cards). 1 carat = 200 mg = 0.2 G. A carat is divided into 100 parts, and each part is called a cent. 0.75 carat is also called 75 points, and 0.02 carat is 2 points. Under other similar conditions, the value of diamond increases exponentially with the increase of its weight; The value of diamonds with the same weight will vary greatly due to the difference in color, clarity and cutting
in every different size and shape, you can find high-quality diamonds. The most important thing is to find a diamond with the right size and style that you like. You may as well try it on in the jewelry store. When it looks and feels right, it will be yours
reference source: Baidu Encyclopedia - diamond ring
Diamond ring parameters are generally divided into three parts: Diamond "4C parameters", ring material and diamond ring brand
diamond "4C parameters"
diamond 4C mainly includes color, clarity, weight and cutting. Currently, the ring rest materials are mainly concentrated in K gold and platinum
Color
the color is divided into 11 levels, such as D, e, F, G, h, I-J, K-L, m, N-O, P-R and s-z. among them, the color level is ≥ h color, and the naked eye can hardly detect the mixed color of the diamond. After all, the price difference between different color grades is relatively large. A one carat diamond of D color is 20000 more expensive than that of F color
cleanliness
GIA is divided into FL (flawless level), if (internal flawless level), VVS (extremely flawless level), vs (slightly flawed level), and I (defective level). For the same 1 carat diamond, the difference of a grade is at least 10000. The clarity is a factor that can affect the fire color of the diamond. Only when the clarity of the diamond ring we wear is ≥ I1
cutting
cutting is very important to the appearance and value of diamonds, and is the most complex and technically demanding appraisal standard in 4C standards
the cutting grade is divided into excellent, very good, good, fair and poor. The price difference of one carat cutting grade is 10000 , but cutting is a very important parameter of diamond fire color. The cutting grade is ≥ very good when purchasing
carat weight
carat (CT) is the unit of mass (weight) of gemstones. Currently, 1 carat is equal to 0.2 g or 200 mg. A carat is divided into 100 points, for example, 50 points is 0.5 carat, which is used to calculate the smaller gems. When other parameters of small diamonds are the same (high quality), a 50 point diamond is nearly 10000 more expensive than a 30 point diamond, and a carat is more than 40000 more expensive than a 50 point diamond. However, according to the effect of the diamond ring, the 30 point diamond ring has a certain degree of sparkle. In addition, the diamond is now very large, so the diamond size ≥ 30 points is enough
comparison of ring materials
platinum
platinum, as a more valuable ring material than gold, has sprung up in the market. There are mainly three types: pt990 (99% gold), pt950 (95% gold) and PT900 (90% gold). The platinum diamond ring gives the new people holy and beautiful meaning. Many people hope to choose platinum to interpret "love is stronger than gold". Moreover, the hardness of platinum is higher than that of gold, and the diamond is not easy to fall on it
18K Gold
because the hardness of 18K is obviously much better than that of platinum, the embedded specific force is stable. 18K is au750, that is, it contains 75% gold and 25% other precious metals, while pt950, that is, platinum, contains 95% gold. The latter is softer due to its high purity. However, 18K gold is easy to fade. The stability of pt950 is never comparable to that of 18K gold, and the hardness of pt950 is also quite high It is not too complex or large grain diamond, and its hardness is not inferior to 18 K gold
it is easy to choose the material of the diamond ring holder. Generally speaking, there are two kinds of platinum and 18K gold. Platinum is relatively expensive, so most people will choose 18K gold as the material for setting diamonds. However, during the selection process, you can choose the size of the diamond and the material of the ring rest according to your own budget
diamond ring brand
in fact, it is very easy to understand the diamond ring brand. The higher the brand, the diamond ring will have brand value, and the price will naturally be higher
The price of diamonds is determined by 4C, regardless of brand and origin. 4C, i.e. carat, cut, clarity and color. Briefly introduce 4C Division: Color: Here we focus on white diamonds. From completely colorless to yellow and brown, completely colorless diamonds are also the most perfect white diamonds, which are very rare. Generally, customers choose a lot, and it seems white to the naked eye. There are more in the F-G file [see the following figure for specific visual effects]
cut: This is the key to the quality of diamonds, which refers to the position of diamond cutting. Good cut can make diamonds fully reflect all light, emit beautiful fire color, and not leak light. Therefore, in order to ensure the shiny degree of diamonds, it is best to choose diamonds with excellent cutting, polishing and symmetry, referred to as 3EX
clarity: refers to the content of the diamond. The less the content, the better. It is generally observed under a 10x magnifying glass, so you can buy it if you can't see the purity of impurities with the naked eye. The cost-effective invisible defect level is at vs, and the inclusions may be seen at a lower level. Therefore, the vs level is generally recommended. [see the following figure for details]
carat: it is the weight of the diamond, that is, the size. This is completely determined according to your budget
of course you should make a beautiful ring rest after buying diamonds. These are the styles that I personally think have a strong sense of design. Let me show you
According to the clarity, color, cut and weight (carat), each item has its own level. For example, the standard configuration in the United States is DF color VV clarity