Diamond is considered to have many magical powers. It is a symbol of fearlessness and invincibility. It can give the wearer extraordinary strength, courage and courage, drive away the soul of disaster and evil, and bless the wearer with peace and happiness. More importantly, diamonds have always been regarded as the amulet of love, and giving diamonds to each other by lovers can ensure that the love between husband and wife is as firm as ever. Therefore, diamonds are the first choice for wedding rings. However, there are so many brands and quantities of diamonds on the market, how to choose them? Any tips?
Diamonds have four most important aspects: weight, color, clarity and cutting. This paper first introduces two aspects.
First of all, when we first see a diamond, what we perceive is its color, which is the color in professional terms.
Color: The color of diamonds ranges from precious colorless, rare light blue and pink to common light yellow. The more transparent and colorless the diamond is, the more white light can penetrate, and the more colorful it is after refraction and dispersion. The whitest diamond is grade D, and the others are grades E, F, G, H, I, J, K, L, M and N in turn.
Diamonds are equivalent to prisms. It can divide the light into colored lights and form colored flashes after reflection. Just as we wear colored glasses, the color of diamonds will act as a filter. Thereby reducing the escape of reflected light. The lighter the diamond color, the stronger the flash color and the higher the color scale. Most gem-grade diamonds belong to colorless-light yellow series. When identifying the color of diamonds, the identified diamonds are compared with a set of international standard colorimetric stones. The colors of the standard colorimetric stones are arranged from colorless D (the highest grade) to yellow Z ... Diamonds have other colors, such as brown, orange, pink and blue. Among them, the most brightly colored diamond was rated as deep brilliant color in the diamond appraisal report of IGI, which was called "fancy" in colored diamond. The lighter a diamond is, the closer it is to colorless, the higher its value and the higher its price. A little color will reduce the brightness of diamonds.
Diamond color grade
Grade d: completely colorless. The highest color level is extremely rare.
Class e: colorless. Only gem experts can detect trace colors. This is a very rare diamond.
Class f: colorless. A small amount of color can only be detected by jewelry experts, but it is still considered colorless. It belongs to high quality diamonds.
G-H grade: almost colorless. Compared with higher grade diamonds, it has a slight color. But diamonds of this color still have high value.
I-J grade: almost colorless. A slight color can be detected. The value is higher.
K-M grade: the color is dark and the fire color is poor, so Zakaly jewelry net is not provided, and customers are advised not to use it.
N-Z grade: dark color, poor fire color, Zakaly jewelry net is not provided, and customers are advised not to use it.
Which color scale is the best?
For idealists, seek colorless diamonds with D-F grade.
For diamonds with high value and invisible color, you can buy diamonds with color grade G-I close to colorless, medium fluorescence grade or blue and white.
Furthermore, if you don't want to compromise on color or exceed the budget, you can choose diamonds with good cutting, clarity of S 1 1-S 12, and fluorescence intensity, which is not inferior to the naked eye. It is possible that you prefer the unique effect created by fluorescence.
Secondly, when we hold a diamond, what we perceive is its weight, which is technically called carat.
The weight of diamond is the most easily measured feature in 4c. Like other precious stones, the weight of diamonds is calculated in carats. Diamonds of the same quality, the greater the weight, the more precious.
The word "carat" comes from a seed called "small horn tree". Because the weight of this seed is surprisingly consistent, it was used to weigh diamonds in the early days. One carat is equivalent to the weight of a small horn tree seed. The current standard is that one carat is equal to 0.2g, and each carat is divided into 100 parts (or equivalent to 200mg), so a 25-cent diamond weighs 0.25mg..IGI uses an electronic balance with an accuracy of 0.0000 1 carat to weigh the exact weight of the diamond, and records it in the diamond appraisal report to two decimal places.
The relationship between weight and volume
Diamond is considered to have many magical powers. It is a symbol of fearlessness and invincibility. It can give the wearer extraordinary strength, courage and courage, drive away the soul of disaster and evil, and bless the wearer with peace and happiness. More importantly, diamonds have always been regarded as the amulet of love, and giving diamonds to each other by lovers can ensure that the love between husband and wife is as firm as ever. Therefore, diamonds are the first choice for wedding rings. However, there are so many brands and quantities of diamonds on the market, how to choose them? Any tips? Let me answer your question from a professional point of view!
How to choose diamonds? Diamonds have four most important aspects: weight, color, clarity and cutting. This article continues to introduce the latter two important factors.
After reading the color and weight, we pay more attention to the brilliance of the diamond, and an important factor that determines the brilliance of the diamond is its cutting.
Cutting refers to the angle at which the technician cuts the valve surface and the proportion of each part of the diamond after cutting. In the 4c standard of diamond value measurement, only lathe workers are directly affected by human activities. Although diamonds can be processed into different shapes (fancy) to meet different tastes, the fineness of cutting directly affects the fire and sparkle of diamonds. Rough diamonds have no luster. Only through the precise design and ingenious carving of well-trained masters can the veil of diamonds be uncovered, and the nature of light can be fully utilized, showing a rainbow-like "luster" with flashing characteristics. The scale of cutting depends on whether the brightness and color of diamonds can be perfectly expressed. The perfect cut diamond should reflect the light entering the diamond through different facets, and finally condense on the top of the diamond, blooming with brilliance and flame. Therefore, the value of diamonds with appropriate cutting ratio is naturally higher.
Ideal tangent
Ideal cut: represents the standard that only 3% of first-class high-quality diamonds can reach. This cutting makes the diamond reflect almost all the light that enters the diamond. Elegant and excellent cutting.
Very good cut: represents about 15% of the diamond cut. It can make diamonds reflect the light of standard grade cutting, but the price is slightly lower.
Good cutting: represents about 25% of diamond cutting. It is the diamond that reflects most of the light entering the drill bit. Much cheaper than VG.
General cutting: It means that the diamond with a roughness of 35% is still a high-quality diamond, but it only reflects the general cutting diamond.
Poor cutting quality: This includes all diamonds that do not meet the general cutting standards. These diamonds are cut deep and narrow or shallow and wide, which is convenient for light to escape from the edge or bottom. Zakaly jewelry net does not provide this kind of inferior cut diamond. The light is not as good as g-cut.
Width and depth affect diamond fire color.
Cutting is too shallow: the light escapes from the bottom and the brightness of the diamond is damaged.
Cut too deep: the light can easily escape from the pavilion, so the brightness of the diamond is damaged, tarnished and dull.
Cutting determines the color of fire.
The cutting ratio of diamond, especially the ratio of pavilion depth to table width, determines the intensity of light reflected and refracted by diamond, which determines the fire color of diamond.
Diameter: A circle crosses the width of a diamond.
Table: refers to the largest of the n planes of a diamond.
Top of the head: extending from the waist to the top of the plane.
Waist: A narrow band around the widest part of a diamond.
Pavilion: the bottom of a diamond, that is, a polyhedral gem from the waist to the bottom.
Depth: the height from the bottom of the gem to the table.
For a diamond with the best cut, it looks very special when we look at it under a magnifying glass. You can browse Zakaly jewelry website to endorse the collected diamonds. These diamonds reflect the most brilliant light, because they are cut according to the most accurate proportion, including the most advanced polished and symmetrical round diamonds, as well as ideal and well-cut princess diamonds, emerald-cut diamonds and top-cut square diamonds.
How to choose diamonds? Let me first introduce the purity, that is, the purity of diamonds, which is completely natural and not affected by human factors.
Clarity represents the transparency of diamonds, which is mainly evaluated by volume, location, inclusions and the number of defects. Pure diamonds are the most popular, but also the most expensive. But many diamonds have some inclusions, scratches, mineral traces or other tiny features, which will damage the pure beauty of diamonds. NGTC, GIA and HRD organizations use a series of detailed rules and standards to outline the quantity, origin, model and inclusion type of diamonds. Gemmologists will use a magnifying glass with a magnification of 10 when inspecting diamonds, and identify the 1 1 grade of diamond clarity according to the standard of American Gemological Institute of G.I.A. Starting from Flawless (FL), that is to say, there are no flaws in the interior and surface of the diamond, and then proceeding to the lowest flaw level (I3), it is described that inclusions and flaws in the stone can be found only by naked eyes.
Which level is the best?
We suggest that you choose a diamond that is flawless to the naked eye. This kind of diamond has high value, but it is cheaper than if and fl diamonds, and it does not contain obvious flaws, which will not detract from the beauty of the diamond. If you want to choose a diamond with SI purity, you can call the jewelry consultation office to confirm that the contents of the diamond are invisible to the naked eye. However, if you want to buy diamonds with beautiful appearance first, then cleanliness, and at the same time you don't want to change your budget, you can choose diamonds with good cutting and color grade G or H.
How to choose a satisfactory colored diamond?
Married, of course, need a unique diamond ring as a witness of lovers' love. Colored diamonds are especially precious because of their rarity. Friends who want to buy colored diamond can look at the following two tips, hoping to help you choose a satisfactory colored diamond.
How to make money by speculating in gold? Expert guidance bank gold and silver TD account opening guidance bank gold and silver simulation trading software package gold number desktop quotation tool 1, beware of "mottled" becoming "solid"
In order to get the maximum benefit, many unscrupulous businessmen often sell yellow and white diamonds with low color grade and hidden impurities as yellow diamonds, and the wholesale price of these diamonds is much cheaper than that of white diamonds of the same grade. Yellow diamond and yellow and white diamond are completely two concepts. Fake yellow diamonds tend to be dark yellow and light in color, if any, but real yellow diamonds emit bright yellow or yellow light close to gold.
2. Quasi-authoritative evaluation institutions
The selection of colored diamond is very important for the selection of appraisal institutions. At present, GIA is the most famous and authoritative appraisal institution in colored diamond. Other famous laboratories include European Jewellery Laboratory (EGL), Belgian Diamond High Council (HRD), American Gemological Society (AGS) and World Gemological Society (IGI). Almost 65,438+0/3 diamonds in the world have been identified by these laboratories.
How to choose the perfect engagement diamond ring
Choosing the perfect engagement diamond ring is not easy. Today, we will choose a perfect engagement diamond ring for you from the following five key points.
Key one: choose the size and style.
You'd better choose a high-quality ring that conforms to your fiancee's style and personality, instead of just choosing a striking big stone. An engagement diamond ring can be small and exquisite, as long as it suits the wearer.
Key 2: Combination of quality and grade.
As an engagement diamond ring, if it looks very outdated, it will undoubtedly disappoint people. Choosing a fashionable engagement diamond ring is usually a safer choice, which will make your engagement diamond ring look unique and timeless.
Key 3: Modernity is integrated into tradition.
Modern engagement diamond rings don't have to be deviant. For example, since gem ring has become the mainstream, is it necessary to completely subvert it? In fact, we can inject some new ideas and ideas into the traditional style ring, which not only increases the modernity of the ring, but also does not deviate too far from the traditional concept.
Key four: the shape is more prominent.
The shape of the ring holder is one of the important factors that determine whether the engagement diamond ring has a modern feeling. The modern ring does not require it to be made into a perfect circle. Many designs hollow out the top, so that the diamond looks like it is embedded between the two ends, rather than at the top of the metal ring holder. In this way, diamonds can be smoother and brighter in the whole design of the ring!
Key 5: Choose colored gems.
When choosing an engagement diamond ring, don't think that white diamonds and white metals are the only choices. Now, there are many different colors of gems to choose from, and even gold and rose gold have reappeared in people's sight.
How to choose silver jewelry for your baby
When the baby was born, I watched him grow up and wanted to buy him a silver jewelry to wear, which can remove fetal poison and ward off evil spirits, but how to choose silver jewelry for the baby?
Pay attention to the weight of silver jewelry when choosing. The baby is too young to bear too much weight. Usually buy a bracelet or a long-life lock for your baby. The weight of the bracelet should be about 20g. If you add bells, it should not exceed 26g. Long-life locks are generally around 20g. Be sure to weigh it when you buy it in a physical store. If you buy it online, you should look at the situation clearly.
When choosing a long-life lock, it is best to match S925 sterling silver chain instead of ordinary red rope. The rope is easy to fade or break, the color of the chain is more uniform and beautiful, and the weight is more sufficient and higher. If you give someone away, you have face.
When choosing bracelets, try to choose those with "walking circles". The baby's hands are still small, so it must be inappropriate to wear them. If you walk in circles, you don't need it, but your heart is adjusted, causing the bracelet to deform.
The shape of the bracelet is either round or the inner wall has a convex design, so that the baby will not cough up and bring comfort to the baby.
In addition, we should also pay attention to whether the silver jewelry has been polished, polished and antiallergic. The baby's skin is too tender to be cut by jewelry, which is not worth the candle.
How to choose the silver jewelry that suits you?
Choosing silver jewelry must be based on your face, skin color and personality, so as to achieve overall harmony. As we all know, sterling silver jewelry is increasingly loved by young fashionistas because of its cool beauty in the classical tradition. Therefore, finding a silver jewelry that suits you can only add icing on the cake.
The relationship between choosing silver jewelry and face
People with round faces should choose long earrings, which can effectively lengthen your face from the visual effect; People with sharp faces, such as melon seeds, suggest wearing round earrings when choosing earrings, which will make your face look fuller visually.
The relationship between choosing silver jewelry and skin color
Why are platinum and sterling silver jewelry becoming more and more popular? Because we Asians have yellow skin, wearing white jewelry can make our skin appear whiter, so people with darker skin, especially those wearing inlaid jewelry, should try to avoid dark colors such as yellow and dark blue. Wearing monochrome accessories such as black and white not only makes you look more tasteful, but also sets off your complexion.
The relationship between choosing silver jewelry and personality
As we all know, if you give an introvert a miniskirt, can she wear it? The answer is obvious. This also shows that the choice of jewelry has a great relationship with personality. Therefore, introverts suggest choosing small and exquisite jewelry to wear; It is recommended that extroverts choose generous and exaggerated accessories to wear.
The above is just a big guide, and there are many tricks, but the most important thing must be different from person to person. Don't follow blindly. Please remember that what suits you is the best.
Five aspects of ruby selection
The choice of ruby can be considered from the following aspects:
1, particle size: The larger the particle size of ruby, the higher the price, depending on your economic situation.
2. Color: There are many colors of rubies, the best is deep pure red, followed by purplish red, followed by dark pink, purplish red and brownish red, and others such as brownish red, dark red and light pink are poor rubies. In addition, when observing rubies from the table, it is best to see only one color when rotating. If you can see other colors, it means that the ruby is not oriented correctly during processing.
3. Fire: The fire color of ruby is the color displayed on the front of ruby under the illumination of light source. In essence, it is a reflection of the comprehensive effect of ruby transparency, cutting and even color. When a good ruby rotates gently (the table is facing itself), you can see many small red "flames" flashing inside, which requires a high-quality ruby to account for 55% of the total crown.
4. Cracks: Because cracks in rubies are common, try to choose rubies with few and thin cracks, especially those passing through the center of rubies. You can point the ruby at the light when you buy it. If possible, you can easily see the cracks distributed on the ruby with the help of a magnifying glass.
5. Star ruby: In addition to color, star ruby also requires its star line to be clear, bright and straight, and the three-star line will converge at the center of the gem.