How can you tell the purity of a diamond? How to distinguish the clarity of a diamond

Diamond is polished diamond, also known as diamond, and the mineral name is diamond. The English word diamond is derived from the ancient Greek word adamant, which means hard and inviolable substance.

In fact, there is no such distinction between diamond and diamond in foreign countries, and the same word "diamond" is used in English, but the word "diamond" is often used in the field of mineralogy, and the word diamond is used in the field of gemology. However, this is not the case, for example, "industrial diamonds" do not belong to the field of gemology, but people have become accustomed to being called so, so they are also used in this entry.

Gem-quality diamonds are colorless and transparent, but most of them are slightly yellowish. The darker the yellow hue or brown tone, the lower the grade. There is a colorless transparent with a little blue in it, which is called "water and fire color", but it is a good product.

Dark blue, deep black, deep golden, red and green, and those with a deep blue, deep gold, red, and green are even rarer, and are known as "brilliant diamonds" or "rare diamonds", and diamonds from the same mining area have similar "pigment" characteristics, so that experienced people can often identify the origin of the diamonds. The first invention of the standard round brilliant cut was in 1914 by Tokowski, a diamond cutter from Antwerp, Belgium. The criteria for judging a diamond are called the 4Cs, which are clarity, color, cut, and carat weight.

Clarity refers to the inclusions of a diamond and should not be referred to as a blemish. The presence of inclusions is indicative of the natural nature of the diamond. Of course, we still want this inclusion to have as few inclusions as possible, hence the clarity grade.

Namely: LC, VVS, VS, SI, P levels. In the past, people did not think about diamonds, but could only use rough diamonds as jewelry, and the era when diamond crystals really became diamonds and became jewelry was about 1450.

At that time, there were only 17 diamonds, and the diamond ring worn by the Queen of England from 1558 to 1603 was just an octahedral diamond crystal, and one of the top was worn off as the ring face. It wasn't until 1919 that a Polish man living in the United States named Tolkowsky designed a diamond cut with 58 turns, which is still used today, and this cut is accurately calculated according to factors such as the refractive index coefficient of the diamond, and cannot be arbitrarily changed, otherwise the polished diamond will have no brilliance or light leakage.

Look at the resolution, the higher the better!

A diamond's inclusions refer to all the characteristics that affect a diamond's clarity. Different types of inclusions have different degrees of impact on clarity, and there are two main types: inclusions and external blemishes. Inclusions are imperfections that are within a diamond or reach the surface of the diamond.

It is important to observe inclusions because they are the main factor in determining a diamond's clarity grade.

The types of inclusions are as follows:

Crystal] crystal refers to all mineral crystals with obvious three-dimensional geometric morphology in the diamond, and the crystal can be divided into colorless or light-colored inclusions and dark or black inclusions.

Dots] The smallest visible inclusion inside a diamond looks like a small white dot under 10x magnification.

Cloudy] A hazy or milky inclusion with no clear border in a diamond, which may be made up of many tiny dots, or it may be a cavity. Clouds are often distributed according to the diamond's axis of symmetry (related to the diamond's growth history), and sometimes there are some black dots of varying sizes in the white cloud.

Feather-like fractures caused by cleavage or tension in the diamond. If the pinnae is relatively large, it is called a "crack", and sometimes a semicircle of pinnae can be seen.

Whiskered waist (raw edges, beards).

The whisker-like cracks that exist in the waist penetrate deep into the inner part, resembling an old man's beard, and it is caused by excessive coarse grinding.

Internal Texture] The growth marks caused by the irregular arrangement of atoms inside the diamond are often flat and straight, and if they are white, colored or reflective, they will affect the clarity.

Twin crystal center] is the center point where the crystalline structure is dislocated, often accompanied by dots. 【Concave crystal plane】

The original crystal plane that recesses into the inside of the diamond from the surface.

Laser holes] Holes left by the use of laser beams and chemicals to remove dark inclusions inside the diamond, resembling white funnels or pipes, can be filled with high refractive index glass.

Wound marks (marks).

The surface of the diamond is struck by an external force into a root-like shape that protrudes into the inside of the diamond.

Diamond clarity refers to the inclusions and external defects in a diamond. Based on the number and size of the imperfections in these two aspects, the GIA standard of the Gemological Institute of America classifies diamonds from high to low clarity, and the higher the grade, the greater the value of the diamond. In recent years, the diamond market has become more and more popular, and the most popular among consumers are diamond jewelry with clarity grades VS and VVS.

So what is the difference between these two types of diamond clarity comparison?

Diamonds are actually smelted from the hardest diamond in nature, and diamond clarity refers to the internal and external characteristics of diamonds in the process of being cut and polished to form diamonds, which are usually regarded as diamond blemishes, but the correct term should be "clarity characteristics", and each diamond has its own unique "clarity characteristics". Clarity characteristics are divided into inclusions and external defects, and diamonds are graded according to the number and size of the features. The most popular diamond products in the jewelry market are VS and VVS, and there are certain differences between these two types of diamonds.

Difference Between VVS and VS Diamond Clarity.

VVS Diamond Clarity Characteristics: Under 10x magnification, there are two grades of VVS diamonds, VVS1 (extremely difficult) can only be seen from the bottom of a polished diamond with very fine pinpoints, needlework, and twin warp lines, and VVS2 (more difficult) is more difficult to spot from the front. Regardless of the grade of VVS diamond, inclusions and external defects are not visible to the naked eye.

VS Diamond Clarity Characteristics: VS diamonds are graded under 10x magnification, VS1 (harder) and VS2 (easier) to see tiny particles inside the diamond, as well as other typical inclusions such as crystals or rain cracks extending to the surface of the diamond, natural concave surfaces, etc. VS clarity diamonds rarely have eye-visible inclusions.

The most striking feature of the VVS and VS diamond clarity comparison is that VVS clarity diamonds will have very few inclusions that are visible to the naked eye, while VVS inclusions are indistinguishable to the naked eye. In terms of **, both VVS and VS grade diamonds have clarity characteristics that are invisible to the naked eye, but the difference between the two can be as high as 30%, and the difference is mainly determined by the color, cut and brand of the diamond. When it comes to which of these two clarity diamonds is worth buying, it still depends on the consumer's own purchasing power.

There are 11 grades of diamond purity powder, namely FL, IF, VVS1, VVS2, etc., "FL" is the highest diamond clarity grade, and all diamonds are observed with a 10x magnifying glass.

It's really divided, and it's especially eye-catching when it's generally pure, and you'll feel some white light shining in the sun.

Of course, there are grades, the highest grade is D, and this grade of diamonds is very pure, without any impurities. Comparisons can be made by letters, and the higher the letters, the higher the purity of the diamond.

Summary. The clarity of diamonds is divided into 6 grades: FL, IF, VVS, VS, SI, and I, among which the clarity of the diamond with the FL grade is the best, and no flaws can be seen under 10x magnification. I diamonds have the worst clarity, with inclusions and blemishes visible to the naked eye.

How is diamond clarity classified?

The clarity of diamonds is divided into 6 grades: FL, IF, VVS, VS, SI, and I, among which the clarity of the diamond with the FL grade is the best, and no flaws can be seen under 10x magnification. I diamonds have the worst clarity, with inclusions and blemishes visible to the naked eye.

FL is the most perfect clarity grade for diamonds, and when viewed under 10x magnification, the diamond has no inclusions or blemishes, making it a very rare diamond.

The IF clarity grade is second only to the FL grade, and when viewed under 10x magnification, a FL clarity diamond has no inclusions inside, but there are tiny blemishes on the surface that can be removed by polishing.

VVS clarity is further divided into VVS1 and VVS2 grades, and when viewed under 10x magnification, VVS diamonds can see that there are tiny imperfections inside, but the imperfections are so small that they are not visible to the naked eye.