Picture of diamonds having fluorescence (is it good if diamonds have fluorescence)

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List of contents for this article:

• 1、How to distinguish synthetic diamonds from natural diamonds
• 2、Methods to distinguish ultraviolet fluorescence from cultivated diamonds and natural diamonds
• 3、Does the fluorescence of diamonds have an impact on their value?
• 4、Is the fluorescence of diamonds important?
• 5、How does the fluorescence of a diamond affect its value?
• 6、Can I buy fluorescent diamonds? Is there a big difference between a diamond with fluorescence and a diamond without fluorescence?

How to distinguish synthetic diamonds from natural diamonds

Artificial diamonds and natural diamonds can be distinguished through two core dimensions: professional identification and simple appearance observation. Among them, professional agency testing is the most accurate method, and a few high-quality artificial diamonds need to rely on professional spectral analysis to distinguish them.

Internal inclusions: Natural diamonds: Contains natural inclusions, cracks or growth lines. Synthetic cubic zirconia: visible unmelted powder or bubbles.

The difference between natural diamonds and synthetic diamonds can be distinguished from the following five perspectives: Natural diamonds from different sources: Born millions of years ago, they were formed in a high temperature and high pressure environment about 160 kilometers below the surface. They are natural minerals. It requires complex processes such as mining, processing, polishing, and grading to become a precious gem with gemstone properties.

Methods to distinguish ultraviolet fluorescence from cultivated diamonds and natural diamonds

Cultivate diamonds: There is usually no fluorescent reaction under long-wave ultraviolet light. Natural diamond: It has blue-white fluorescence under long-wave ultraviolet light, and has weak or inert (no reaction) under short-wave ultraviolet light. Note: The left side of the picture shows the fluorescent layer growth pattern of cultivated diamonds, and the right side shows the occasional ring growth pattern of natural diamonds. Ultraviolet fluorescence luminescence map characteristics Cultivated diamond: HPHT method: Fluorescence image shows hourglass-like growth patterns, corresponding to internal dendritic growth traces.

Ultraviolet fluorescence reaction Natural diamonds mostly show blue or a small amount of yellow fluorescence under long-wave ultraviolet light, and the fluorescence under short-wave ultraviolet light is weak. Cultivated diamonds emit medium-intensity yellow-green or orange-yellow fluorescence under both long-wave and short-wave ultraviolet radiation, and the fluorescence intensity under short-wave ultraviolet radiation is significantly higher than that of natural diamonds. This characteristic can be used to quickly distinguish the two.

Under ultraviolet "ID card" short-wave ultraviolet light, cultivated diamonds often show yellow-green or orange-yellow fluorescence and have octahedral zoning phenomenon; while natural diamonds are mostly blue fluorescence and are more evenly distributed. The portable highlighter can achieve preliminary screening in 10 seconds.

Professional instrument testing (professional equipment is required) Thermal conductivity meters can only determine whether it is a diamond and cannot distinguish between natural and cultivated types. Do not use this as a basis for distinction. Other professional methods include: -Raman spectroscopy testing: It can accurately detect the growth structure of diamonds and is currently the authoritative method for laboratories to distinguish between natural and cultivated diamonds.

Does the fluorescence of diamonds have an impact on their value?

The fluorescence of diamonds usually has a negative impact on their value under the same 4C conditions. The stronger the fluorescence, the lower the price, but exceptions may be made for colored diamonds or specific needs.

Large carat diamond itself has a higher value, consumers are more stringent about its quality, and the existence of fluorescence will obviously affect the overall quality and value of diamonds.

Blue fluorescence: most common and most significant for value.

Diamond fluorescence does not mean that it does not maintain value, depending on the strength and color of fluorescence. Many people worry that fluorescence will affect the value of diamonds, but in most cases, weak or moderate blue fluorescence has no negative effect on the appearance of diamonds, and even makes some diamonds look whiter in certain light. Only when the intensity is very high and the fluorescent color is not blue (such as yellow, green, etc.), it is possible to make the diamond appear hazy or greasy, thus affecting the value.

Diamond fluorescence does not necessarily not maintain value, but fluorescence has a certain impact on the value of diamonds, and fluorescence intensity is different, the degree of impact is also different. The negative impact of fluorescence on diamond value Usually, fluorescence will have a certain degree of weakening of diamond value.

Is the fluorescence of diamonds important?

To sum up, the fluorescence of diamonds is important. It not only affects the appearance and value of diamonds, but also requires trade-offs and choices when purchasing.

Differences in the performance and influence of different fluorescence levels No fluorescence (None): Diamonds without fluorescence will not produce fluorescence reactions under any lighting conditions, and can most realistically show the characteristics of the diamond itself such as color, clarity and fire color. They are usually more popular in the market, especially for diamonds with high color grades. No fluorescence is an important manifestation of their high quality and the price is relatively high.

Diamond fluorescence is important. The following is a detailed explanation of the importance of diamond fluorescence: Fluorescence is a natural attribute of diamonds: Diamond fluorescence refers to colored light such as blue or yellow light emitted by diamonds under strong ultraviolet light, which is a natural attribute of diamonds. Fluorescence level classification: The fluorescence effect of diamonds can be divided into different levels according to its strength, including none, faint, medium, strong and very strong.

How does the fluorescence of a diamond affect its value?

1. The fluorescence of diamonds usually has a negative impact on its value under the same 4C conditions. The stronger the fluorescence, the lower the price, but exceptions may be made for colored diamonds or specific needs.

2. If it is weak fluorescence, it will have little impact on the color and quality of the diamond, and it is impossible to tell whether there is fluorescence with the naked eye under natural light.

3. Small impact on the value of low-quality diamonds in small carats: Generally speaking, fluorescence has little impact on the value of diamonds below 0.5 carats and with low color and clarity.

4. Effect of rarity: Although most diamonds have certain fluorescence, there are relatively few diamonds with strong fluorescence and no fluorescence. These diamonds with special fluorescence are often rarer and may have higher value in some markets. Overall, the impact of fluorescence on diamonds is multi-faceted, including price, appearance and rarity.

Can I buy fluorescent diamonds? Is there a big difference between a diamond with fluorescence and a diamond without fluorescence?

Diamonds with fluorescence can be purchased, but it needs to be comprehensively judged based on the fluorescence intensity and diamond color level; the difference between fluorescence and non-fluorescence in diamonds is smaller when weak/medium fluorescence, and may be more obvious when strong fluorescence. The difference between fluorescent and non-fluorescent diamonds is not much different from weak/medium fluorescent and non-fluorescent diamonds. Weak and medium fluorescent diamonds are almost indistinguishable from non-fluorescent diamonds in daily wear.

The difference between fluorescent and non-fluorescent diamonds depends on the intensity of the fluorescent light. Diamonds with fluorescent light can be purchased under certain conditions. The difference between fluorescent and non-fluorescent diamonds is not much different from weak/medium fluorescent and non-fluorescent: under natural light or ordinary light, there is almost no visual difference between weak and medium fluorescent diamonds and non-fluorescent diamonds. These fluorescent characteristics are basically invisible during daily wear.

You can buy diamonds with fluorescent light, and even some diamonds with weak/medium fluorescent light are still cost-effective choices. Under natural light, there is no difference between non-fluorescent and medium-fluorescent diamonds, and no difference can be seen. However, when compared with diamonds without fluorescence and some strong or very strong fluorescence, there may be some visual differences.

Whether to buy fluorescent diamonds requires a comprehensive judgment based on color grade, cost performance requirements and personal preferences. It is not absolutely impossible to buy them. The specific analysis is as follows: Impact of fluorescence on diamond prices In the white diamond series, under the same 4C conditions (color, clarity, cutting, carat weight), the price of fluorescent diamonds is usually lower than that of non-fluorescent diamonds.

There is no absolute distinction between whether a diamond has fluorescence or non-fluorescence. Each has its own characteristics, which mainly depends on personal preferences and purchase purposes. First of all, from the perspective of diamond quality and value: fluorescence does not affect the quality and value of diamonds: the value of diamonds mainly depends on the 4C standards, namely weight, color, clarity and cutting. Fluorescence, as a natural attribute of diamonds, does not have a direct impact on its quality and value.