At present, the popular diamond claiming system in the world is shown in Table 2-4-2. During classification, it is mainly based on the internal and appearance defects of diamonds, and they have a unified name, logo and color internationally internationally. External defects are represented by green strokes, mainly abrasion, excess faceted, original crystal surface, scars, small white dots, grinds, and scars. The characteristics of internal defects are uniformly represented by red strokes. It is mainly expressed by red strokes, mainly in the red strokes, mainly hairy, broken injuries, holes, gaps, cloud -like cracks, crystal buns, internal growth lines, etc. Table 2-4-2 Various diamond clarity level systems against the US (GIA) International Diamond Commission (IDC) British and German Chinese appraisal features completely flawless (FL) Loupe Cleanfl IF flawless 10 times mirror can not see any parcel or defect Internal flawless (IF) 10x mirror found that a small amount of external defects that can be eliminated by polishing is very slightly flawed VVS1 VVS1 VVS VVS VVS VVS 10 times mirror can be found 1-2 in the mirror. VVS2 VVS2 Polar Flaw VS1 VS1 VS VS VS No. 1 Spend 10 -fold Mirror is easy to find a small amount of small mineral bags Vs2 vs2 vs2 micro flaw Si si si No. 2 spent 10 times in the mirror is very easy to find mineral parcels. Mineral parcel micro flaws SI2 first -class flaw i1 P1 1stpk PK1 No. 3 Flower Eye can see mineral parcels and larger lax and cracks. The necessary conditions for classification (1) Diamond cleaning: Diamonds are close to oil, so it is essential to clear all the fat and dirt from the gemstone before testing. The current cleaning solution is propane. (2) The magnification of the lens: For the classification classification, the internationally agreed 10ⅹ magnifying glass is agreed. (3) Lighting conditions: Requirement of lighting conditions is to make as many light as possible into the diamond pavilion. 3. Classification steps: (1) Check each small face one by one. (2) Determine the level of clarity. The main consideration is: the number of wrap bodies: the more the number of parcels, the lower the clarity level. The size of the parcel: the larger the package, the lower the brightness of the diamond, the lower the clarity level. Package location: The more the position of the parcel is located, the greater the impact on the clarity. The brightness of the package: the darker the package, the higher the definition, and the lower the level level. Types of parcels: If other factors are the same, then the blurred clouds with similar sizes and positions are less impact than dark crystals on the clarity.
At present, the popular diamond claiming system in the world is shown in Table 2-4-2. During classification, it is mainly based on the internal and appearance defects of diamonds, and they have a unified name, logo and color internationally internationally. External defects are represented by green strokes, mainly abrasion, excess faceted, original crystal surface, scars, small white dots, grinds, and scars. The characteristics of internal defects are uniformly represented by red strokes. It is mainly expressed by red strokes, mainly in the red strokes, mainly hairy, broken injuries, holes, gaps, cloud -like cracks, crystal buns, internal growth lines, etc. Table 2-4-2 Various diamond clarity level systems against the US (GIA) International Diamond Commission (IDC) British and German Chinese appraisal features completely flawless (FL) Loupe Cleanfl IF flawless 10 times mirror can not see any parcel or defect Internal flawless (IF) 10x mirror found that a small amount of external defects that can be eliminated by polishing is very slightly flawed VVS1 VVS1 VVS VVS VVS VVS 10 times mirror can be found 1-2 in the mirror. VVS2 VVS2 Polar Flaw VS1 VS1 VS VS VS No. 1 Spend 10 -fold Mirror is easy to find a small amount of small mineral bags Vs2 vs2 vs2 micro flaw Si si si No. 2 spent 10 times in the mirror is very easy to find mineral parcels. Mineral parcel micro flaws SI2 first -class flaw i1 P1 1stpk PK1 No. 3 Flower Eye can see mineral parcels and larger lax and cracks. The necessary conditions for classification (1) Diamond cleaning: Diamonds are close to oil, so it is essential to clear all the fat and dirt from the gemstone before testing. The current cleaning solution is propane. (2) The magnification of the lens: For the classification classification, the internationally agreed 10ⅹ magnifying glass is agreed. (3) Lighting conditions: Requirement of lighting conditions is to make as many light as possible into the diamond pavilion. 3. Classification steps: (1) Check each small face one by one. (2) Determine the level of clarity. The main consideration is: the number of wrap bodies: the more the number of parcels, the lower the clarity level. The size of the parcel: the larger the package, the lower the brightness of the diamond, the lower the clarity level. Package location: The more the position of the parcel is located, the greater the impact on the clarity. The brightness of the package: the darker the package, the higher the definition, and the lower the level level. Types of parcels: If other factors are the same, then the blurred clouds with similar sizes and positions are less impact than dark crystals on the clarity.