Diamond clarity level and color level

Division of diamond clarity level
According to the GIA diamond classification standards, diamond claims can be divided into: FL, IF, VVS1, VVS2, VS1, VS2, SI1, SI2, I1, i2, i3, i3, i3, I3 Essence
FL is flawless. With ten times the observation of observation, no flaws can be seen in the inside and outside of the fall. The internal flaw inside the IF refers to the inside of the diamond, but there are tiny flaws outside.
VVS is extremely light and slightly flawed. With ten times the observation of observations, there are defects that are not easy to view the inner and outer parts of the diamond.
si1 micr -defects. Under ten times the observation of observation, some flaws can be seen in the inner and outer parts of the diamond.
si2 micr -defects. Under ten times the observation of observation, the internal or external exterior of the diamond can be easily seen, and some of them can be seen directly with the naked eye.
i1 is defective, you can directly see the inside and outside of the diamond with the naked eye.
i2 has defects. You can directly see the inside and outside of the diamond with the naked eye, and the inner contents account for a quarter of the diamond, affecting the light of the diamond.
i3 is defective. You can directly see that there are many obvious flaws inside and outside the diamond.
i1 -I3 (Included/miscellaneous) -The flaws at this level of diamonds are easier to observe with the naked eye. It has a greater impact on the glory of the diamond and is not recommended.
diamond color level
diamond color from D E f g h I j k l m n o p Q q r s t u v w x y z y z, the color of the diamond is acceptable as long as H color.
D level: The highest level in diamonds, pure colorless, is perfect, is the most rare existence in diamonds, with strong rareness.
E: High -quality diamonds, colorless, ordinary people cannot see the color from it. Only a small amount of jewelry appraisal experts can identify the color.
F level: High -quality diamonds slightly lower than E -Class, unless it is a jewelry appraisal expert, it is difficult to detect the color.
g ~ H level: Although it is close to colorless, compared to colorless high -quality diamonds, there is a slightly light yellow inside.
i ~ J -level: It is still close to colorless, but the interior is also slightly yellow and valuable.
k ~ M level: Most people can obviously see the colors, and the color itself is slightly dull, the level is low, the fire color and gloss are poor.

1. Simple method of identifying diamonds
A. The single -folding of diamonds
The single -folding of diamond is determined by the essential characteristics of the diamond. And most of the other natural gems or artificial gems are double -fold. The impersonal diamonds are observed at 10 times the large mirror. From the perspective of slightly obliquely on the front, it is easy to see overlapping images of the edges and corners, and at the same time present two bottom lights. The difference between the dual refractive index is small, such as vermiculite, etc., can also see the overlapping image of the bottom.

B. The adsorption of diamonds

diamonds have a certain affinity for oil and dirt, that is, oil dirt can easily be adsorbed by diamonds. Therefore, touching the diamond with your fingers will feel sticky, and your fingers seem to have a sticky feeling. This is what any gem is. This method needs to be trained to master the delicate differences.

C. The characteristics of the straight line

Dip the ink with a pen through the diamond. If it is a real diamond, the surface leaves a smooth and continuous line, which is characterized by a straight line. The counterfeit is left with the lines composed of small dots. Observe this method to observe the amplification mirror.

D. The unique King Kong luster

Under 100 degrees of incandescent lights, the cut diamonds are compared with counterfeit products. It is easy to see which one has Vajra gloss Essence This method should not be performed under too dark or too strong light.

2. Understand the quality of diamond

The aspects of evaluating the quality of diamonds: weight, color, cutting, and clarity. When buying diamonds, consumers are contacting the size of the diamond at first glance, that is, the larger the weight, the larger the diamond, the higher the price, and the weight of the diamond. At that time, it can be noted that after the weight is selected, the color of the diamond is recommended. It is recommended that consumers purchase white diamonds with white colors, because the same weight diamonds are more white than yellow or gray. The next step is the cutting of diamonds. He refers to the level of cutting and the level of decoration. It is divided into good, good, generally three grades. Generally, it is difficult for consumers The front is facing the strong light or the sun, and the colorful light is launched from the front, which is commonly referred to as the "fire" phenomenon. The stronger the "fire", the better the cutting work. Finally, the clarity of diamonds. The clarity refers to the amount of diamond defects. The clarity is divided into: LC, VVS, VS, SI, and P level. The LC level refers to the flaws that cannot be seen outside the large mirror at 10 times. Since the output of LC -level diamonds is very small, it is used for less accessories. The P level is a heavy defect. It can be seen by the naked eye.

3. Buy the diamonds of the heart

(1) Consumers to buy diamond weight if it is less than 30 points, it is among the small diamonds. , The color is white, and the clarity does not have to be too demanding. Si is sufficient, because the SI -level diamond meat does not see the flaws, and the relatively low price is also low. Class VS level should be selected, and VVS levels should be better.

(2) Pay attention to the discount of diamond ornaments. Generally speaking, the discount of merchants at about 8.5 % is a normal range. It may be that the quality of the diamond is not high, or it may be discounted after the price increase, so consumers should pay more than three, and do not buy them blindly.

(3) The identification certificate is the identity card of the diamond, which is issued by a quality inspection institution approved by the technical supervision bureau at all levels. Consume the identification certificate issued by the local quality inspection agency.

Overview