What are the grades of diamonds and how do you identify them?

We can't identify it with the naked eye, or we should go to a regular jewelry appraisal center to identify it.

PeerSafe V Jewelry, Le V Daifuku Natural Diamonds are formed by carbon elements in a high-temperature and high-pressure environment. This process also results in each diamond having internal features called "inclusions" and those on the surface of the diamond called "blemishes".

According to China's national standards, the clarity of diamonds is divided into five major grades: LC (flawless grade), VVS (extremely slightly flawed grade), VS (flawed grade), SI (small flawed grade) and P (flawed grade), and on this basis, it is subdivided into LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2 and P3 according to the size, quantity, location and nature of the clarity characteristics.

Wouldn't it be better to get it identified?

The GIA Diamond Clarity Standard, which is divided into 6 types and 11 grades, is as follows:

Flawless (FL) Under 10x magnification, the diamond has no inclusions or blemishes.

Internally Flawless (IF) When viewed under 10x magnification, the diamond has no inclusions inside, but there are insignificant blemishes on the surface that can be removed by polishing.

Very Slightly Included (VVS) When viewed under 10x magnification, there are extremely fine imperfections on the inside of a diamond that are difficult for even a professional grader to see.

Slightly Included (vs) Under 10x magnification, the diamond's imperfections are visible, but very small.

Slightly Included (SI) When viewed under 10x magnification, the diamond has clearly visible imperfections.

Included (i) Imperfections are very noticeable under 10x magnification and visible to the naked eye, and affect the diamond's solidity or clarity and brilliance.

There are four main aspects of diamond grading, namely the 4Cs of diamondsDiamond weight, color, clarity, cut。Each "C" here has a hierarchy.

Diamond weight spring deficiency is calculated in carats (ct), 1 carat = 200 mg = grams.

According to the purity of the color, the international diamond color is divided into 23 grades, and they are represented by English letters, starting from D, followed by D, E, F, G, H, I, J, K, L, M, N...z,d is the highest grade and z is the lowest grade.

The diamond clarity grade is divided into six major grades and 11 minor grades. They are FL, IF, VVS (VVS1, VVS2), VS (VS1, VS2), SI (SI1, SI2), I (I1, I2, I3).

Diamond cut grades are graded from highest to lowest: Excellent, Very good, good, Fair, and Poor.

In addition, if you buy diamonds, you also need to pay attention to diamond fluorescence.

Diamond fluorescenceIt refers to the colored light such as blue light or yellow light emitted by diamonds under ultraviolet light. There are 5 levels of diamond fluorescence:

None: Does not emit light at all under ultraviolet light.

Faint fluorescence: Mori Lu glows faintly under ultraviolet light.

Medium: Glows under ultraviolet light.

Strong or very strong: Intense luminescence can be clearly seen under ultraviolet light.

Categories: Life.

Problem description: There are several types of diamond certificates.

Analysis: Diamond grading

Diamonds are graded from four aspects: colour, clarity, cut and quality (CARAT1), referred to as the 4C grade.

Color grade According to the color change of the diamond, it is divided into 12 consecutive color grades, with the English letters D (the whitest), E, F, G, H, I, J, K, L, M, N, clarity grade is divided into LC, VVS, VS, SI, P five major grades, and subdivided into LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2, P3 ten sub-levels. For diamonds with less than (or no quality), the clarity grade can be divided into five broad grades.

Ratio levels are divided into three levels: very good, good, and fair.

The basic contents of a diamond grading report.

The basics are what must be in a diamond grading report.

Certificate No. Quality Specifications.

Representation: Maximum Diameter, Minimum Diameter, Full Depth.

Color grade and fluorescence intensity grade Clarity grade Cut.

Ratio: There should be measurements of the maximum diameter, minimum diameter, total depth, table width ratio, waist thickness ratio, pavilion depth ratio, and bottom tip ratio.

Retouching Levels Clarity Sketch Signatures & Dates Other.

What can be selected in the diamond grading report. Such as: ratio level, color coordinates, clarity coordinates, remarks, etc.

01 Diamonds are divided into 23 color grades by color, ranging from colorless to light yellow, represented by D to Z, with D being the highest; The clarity of a diamond, from high to low, is graded as FL, IF, VVS, VS, SL.

02 The color grade of diamonds can be roughly divided into 5 grades from D-Z, of which D, E, and F are the best grades, and Colorless, with D being the best, and E and F being the second. After that, G, H, I, and J are sub-optimal and close to colorless. The next grades are colored from k-z, k, l, and m are slightly yellow, and n-z is the worst and slightly yellow.

03 Diamond cut can be divided into 6 grades, which are excellent, verygood, good, medium, fair, and poor (good the following are not recommended to buy).

04 Diamond purity can be roughly divided into 5 grades from F-I: FL Flawless (flawless), IF Flawless (internally flawless), VVS Minimal Flaw (the difference between VVS1 and VVS2 is that the latter has very small cotton dots and small stubble, etc.), VS Micro Flaw, and SI Small Flaw.