Question 1: What is the fluorescence of diamonds? In other words, we can't feel it in natural light. Only in the case of strong ultraviolet rays can the naked eye see diamonds with strong fluorescence, and the fluorescence of diamonds will not affect your usual wear. The fluorescence of diamonds is not only blue, but also yellow, blue, orange, pink and so on. The fluorescence of diamonds is strong and weak. According to GIA standard, the fluorescence of diamonds is divided into five grades: N (none), F (weak), M (medium), S (strong) and VS (very strong). Not all diamonds have fluorescence, but most diamonds do have a little fluorescence. The fluorescence index must be written for international testing of diamonds, but there is no special mark on the domestic certificate. The value of diamond is not only influenced by "4C", but also by the fluorescence of diamond. The higher the diamond grade, the bigger the diamond and the greater its influence. The stronger the fluorescence, the greater the influence on the colorless color, and the hazy feeling (clearer under 10 times lens) will be produced under the light irradiation, which will affect the brightness and permeability of high-colored diamonds. Because of the limited testing level, domestic testing centers do not grade and comment on fluorescence, but the fluorescence of diamonds will affect the price of diamonds. Consumers must pay attention to fluorescence when buying diamonds in the future!

Question 2: The fluorescence of diamond is another index different from the 4C parameter of diamond, which can be used as an auxiliary index to evaluate the quality of diamond. This indicator is not marked on the domestic certificate at all, and the sales staff of jewelry stores rarely mention it to customers, but everyone in the industry knows that the degree of fluorescence does affect the price.

Let me first introduce the fluorescence of diamonds, which means that diamonds will emit colored light such as blue light or yellow light under strong ultraviolet radiation. According to the intensity grade, it is divided into five grades: none (slight), weak (moderate) and strong (very strong). In natural light, we can't feel it, except in the summer sun with strong ultraviolet rays, diamonds with strong fluorescence grade may be felt by naked eyes, and slight fluorescence grade is difficult to detect, so in most cases, fluorescence has no effect on our daily wear.

Under normal circumstances, can you distinguish the following diamonds with different fluorescence grades?

Fluorescence is a natural indicator, not an artificially added factor, and it has no effect on the quality of diamond itself. However, considering that the luster of diamonds will be impure, the price of diamonds with fluorescence will be lower than that without fluorescence, and the higher the fluorescence grade, the lower the price. Especially for some diamonds with high color clarity, the price gap between fluorescent and non-fluorescent is even greater. Actually, it's quite understandable when you think about it. People who have the financial strength to buy high-quality diamonds naturally want to be as perfect as possible in all aspects, and so do fluorescence indicators. Therefore, some diamonds with high color, high purity and strong fluorescence will naturally be cheaper because few people are interested.

Having said that, you should also have a general understanding of fluorescence. Here are some professional suggestions: if you buy diamonds mainly for daily wear, you don't have to consider the fluorescence problem, at least slight or moderate fluorescence can be considered; If the selected diamond has a high parameter level, or there are some considerations about investment preservation, then try to choose non-fluorescent diamonds.

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Question 3: What is the fluorescence of diamonds? There are many kinds of precious stones, which will emit light similar to fluorescence under the irradiation of short-wave light (usually ultraviolet light) invisible to the naked eye. This is called fluorescence reaction. Diamonds don't necessarily glow, but most don't. The fluorescence of diamonds with fluorescence reaction is recorded in the certificate as VS (strongest fluorescence), S (strong fluorescence), Med (medium fluorescence) and F (slight fluorescence). And record its color at the same time, at most blue and yellow. If the fluorescence of a diamond is F, it is impossible to tell what color it is. The record of fluorescence reaction on the certificate helps to identify diamonds. Some diamonds with strong fluorescence reaction have poor transparency and look like soapy water, which is detrimental to the appearance. The fluorescence levels are divided into VS (strongest fluorescence), S (strong fluorescence), Med (moderate fluorescence), F (slight fluorescence) and Non (no fluorescence). Diamonds with strong fluorescence will have poor permeability under light irradiation. So the stronger the fluorescence, the cheaper the price.

Question 4: What are the abbreviations for diamond fluorescence? How are their grades? The fluorescence of diamond means that it will emit blue light or yellow light and other colors under strong ultraviolet radiation. According to the intensity grade, it is divided into five grades: none (none), weak (slight), medium (medium) and strong (very strong).

Question 5: What is the fluorescence of diamonds? Why do diamonds have fluorescence? Diamonds are naturally formed, but there are some trace elements in the process of formation. These trace elements will have a weak fluorescence reaction under ultraviolet irradiation, which will not have a great impact on the diamond itself, but will slightly affect the price of the diamond.

The fluorescence level from high to low is non-(no fluorescence) FNT (weak fluorescence) MED (medium fluorescence) STG (strong fluorescence). No fluorescence is the highest level.

Question 6: What does fluorescence in diamonds mean? The fluorescence of diamonds is inherent in diamonds and can only be seen under ultraviolet light. Some have, some have and some don't. Generally, the fluorescence will be blue, yellow and light yellow.

Question 7: What does it mean that diamonds are fluorescent? It is not good for diamonds to have fluorescence. The stronger the fluorescence, the worse the quality.

Question 8: Ask you: What do you mean if diamonds are fluorescent? I wear it myself. Is there fluorescence, which will affect the appearance? According to the GIA standard, the fluorescence of loose diamonds can be divided into five grades: Non (none), f (weak), Med (medium), s (strong) and VS (very strong). The fluorescence grade of diamonds with D-G color above 50 points has a great influence on the price of diamonds with VS grade or above. Medium fluorescence will affect the price by about 5%- 10%, while strong fluorescence will be 30% cheaper.

The stronger the fluorescence, the greater the influence on the almost colorless color, and the hazy feeling (10 times clearer under the mirror) will be produced under the light irradiation, which will affect the brightness and permeability of high-colored diamonds. For diamonds below J color, although blue fluorescence can make diamonds appear white, the price will still be 5%- 10% lower. Small diamonds below 20 cents basically do not affect the price. More than 20 points have a certain price impact. Domestic testing centers do not grade and comment on fluorescence because of the fixed testing level, but because most diamonds are imported, the price changes with the pricing standards in the international market. Therefore, many diamonds with strong fluorescence sell at the same price as diamonds without fluorescence, which is a great loss to consumers.

In order to ensure the value of your diamond, if your diamond is above 20 points, be sure to ask the seller about the fluorescence grade of the diamond, and compare the transparency of the diamond under strong light and soft light after receiving the goods. If the permeability of a diamond is much worse under strong light, then your diamond is likely to have strong fluorescence. If cobalt stone has strong fluorescence, it will look foggy under the light.

Take a good look, if the fluorescence is strong, it will not only affect the fire color of the diamond, but also its price will not be too high.

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Question 9: Is it better for diamonds to have strong fluorescence or no fluorescence? Diamonds are naturally formed, but there are some trace elements in the process of formation. These trace elements will have a weak fluorescence reaction under ultraviolet irradiation, which will not have a great impact on the diamond itself, but will slightly affect the price of the diamond. The fluorescence level from high to low is non-(no fluorescence) FNT (weak fluorescence) MED (medium fluorescence) STG (strong fluorescence). No fluorescence is the highest level.

Question 10: What does fluorescence in diamonds mean? D stands for the color of diamond, the highest color is colorless, followed by EFGHIJK. ..........

IF stands for the purity of the diamond, the flawless one is the best, and IF stands for the flawless diamond. Followed by vvs 1, vvs2, vs 1, vs2, si 1, si2, i 1.

EX stands for cutting, and EX stands for perfect cut.

No fluorescence is the best fluorescence.