[Jewelry Home Craft Culture] Diamonds have always been popular with everyone because of their beautiful appearance. However, diamond prices have always remained high due to problems such as production and mining. Driven by interests, unscrupulous merchants will inevitably use oth

[Jewelry Home Craft Culture] Diamonds have always been popular with everyone because of their beautiful appearance. However, diamond prices have always remained high due to problems such as production and mining. Driven by interests, unscrupulous merchants will inevitably use other materials to pretend to be valuable diamonds. I believe that many treasure fans may have been confused by fake diamonds when they get started. Today we would like to teach you a few simple diamond identification methods to help you step on less mines when shopping. However, it is necessary to declare in advance here: the following methods in are for reference only and do not represent the final identification results.

Introduction to Diamonds and Low-level Imitation

. Diamond hijacking

Principle: Diamond Thermal Conductivity

Diamond hijacking hijacking hijacking

Harry Winston Harry Winston Classic Winston Series Diamond Ring

0 Place the diamonds and imitations on the glass plate together. Their starting temperature must be the same. Gasing the sample and observing the disappearance of the fog. The fog on the diamond will disappear quickly, while the fog on the imitations will disappear slowly than the diamond. This is because the diamond has high thermal conductivity.

. Put it in water

Principle: The density of diamonds

Put the diamonds in water

Left: Diamond floats on the surface, false diamond

In: Diamond floats in the middle of water, false diamond

Right: Diamond sinks to the bottom of the water, true diamond

Prepare a transparent glass cup, pour 3/4 of the water in it, and then carefully put the diamond head into the cup. If the diamond sinks, it means it is a real diamond. On the contrary, if it floats on the top or in the middle, it is a fake. Because the density of diamonds is relatively higher, it will sink to the bottom of the water.

. Magnifying glass judges

Principle: There are inclusions inside real diamonds

Use a magnifying glass to observe whether there are inclusions inside diamonds

Use a magnifying glass to observe the inside of diamonds. Natural diamonds generally have inclusions, while some imitations are made too perfectly, with almost no flaws inside.

. Place the top of the newspaper

Principle: The refractive index of diamond

left: real diamond

right: false diamond

. Put the diamond diamond flat side down, gently place it on the newspaper page in an area with a lot of text, and ensure sufficient light around it, no objects or the human body casts shadows on the diamond. If you can see the words in the newspaper through the diamond (even if the letter is a little blurry), then the diamond is fake, while the real diamond cannot see clearly. Because of real diamond, light will refract light along the facet of the diamond in different directions rather than straight lines. Therefore, the diamond cannot be clearly seen and the letters on the paper are identified.

. Drop method

Principle: Hydrophobicity of diamonds

De Beers Promise series Princess Square Cutting Ring

Drop a drop of water on the diamond. If the water droplets can bulge and not dissipate for a long time, it is true. In addition to being lipophilic, diamonds are hydrophobic. Therefore, water droplets will not dissipate immediately on the diamond. This method is suitable for relatively larger diamonds, which makes it easier to observe water droplets.

Advanced Edition: Identification of natural diamonds and Moissanite diamonds

. Observe facet edge ghost

Moissanite diamonds will see ghost

Using a ten-fold magnifying glass is the easiest way to distinguish natural diamonds from moissanite diamonds. Since natural diamonds are single refraction gems, there is no way to see ghosts when viewed with a 10x magnifying glass. But the Moissanite is an birefringent gem. When looking at the bottom of the kite facet on the crown under a 10x magnifying glass, a heavy shadow can be seen.

. Look at the fire color

Left: Diamond

Right: Moissanite

Use the spotlight to illuminate diamonds and moissanite from the pavilion. The more rich fire color is moissanite, and the weaker fire color is diamonds. Because the dispersion value of diamonds is 0.044, mosanite is 0.104. In addition, the refractive index of diamonds is 2.417 and mossanite is 2.65, so the fire color of mossanite is even more dazzling than that of natural diamonds.

. Measurement of specific gravity

Graff Graff CLASSIC GRAFF series ring

The specific gravity of moissanite is different from natural diamonds. The specific gravity of diamonds is 3.52, while the specific gravity of moissanite is only 3.22. Under conditions, for moissanites that have not been inlaid, they can be tested with methyl iodide specific gravity liquid (specific gravity 3.32), which can be easily distinguished.

Ultimate Edition: Identification of Diamonds and Synthetic Diamonds

left: Synthetic Diamonds

right: Natural Diamonds

First of all, we need to clarify that imitation diamonds are different from synthetic diamonds. Although the materials used to make these two diamonds were born in the laboratory, synthetic diamonds are only produced through the process of artificial diamonds, , rather than natural diamonds formed during geological changes. , and synthetic diamonds are basically the same as natural diamonds in terms of chemical composition, crystal structure, optical properties and physical properties, while diamond imitations are different. synthetic diamonds are almost exactly the same as natural diamonds. Except for the differences in atomic structure, can only be identified by professional appraisers in gem identification institutes.

Diamond imitations include glass, synthetic rutile, colorless synthetic spinel and colorless synthetic sapphire, as well as YAG (yttrium aluminum garnet), GGG (gadolinium gallium garnet), CZ (synthetic zircon dioxide), and synthetic carbon silica. In addition, synthetic diamonds have almost the same properties as natural diamonds, so the above methods can only give you a reference. The results of are not necessarily accurate. The best way is to send the diamonds to an independent gem identification institute to test the gems. (Photo/Text Jewelry Home Echo)

. Measurement of specific gravity

Graff Graff CLASSIC GRAFF series ring

The specific gravity of moissanite is different from natural diamonds. The specific gravity of diamonds is 3.52, while the specific gravity of moissanite is only 3.22. Under conditions, for moissanites that have not been inlaid, they can be tested with methyl iodide specific gravity liquid (specific gravity 3.32), which can be easily distinguished.

Ultimate Edition: Identification of Diamonds and Synthetic Diamonds

left: Synthetic Diamonds

right: Natural Diamonds

First of all, we need to clarify that imitation diamonds are different from synthetic diamonds. Although the materials used to make these two diamonds were born in the laboratory, synthetic diamonds are only produced through the process of artificial diamonds, , rather than natural diamonds formed during geological changes. , and synthetic diamonds are basically the same as natural diamonds in terms of chemical composition, crystal structure, optical properties and physical properties, while diamond imitations are different. synthetic diamonds are almost exactly the same as natural diamonds. Except for the differences in atomic structure, can only be identified by professional appraisers in gem identification institutes.

Diamond imitations include glass, synthetic rutile, colorless synthetic spinel and colorless synthetic sapphire, as well as YAG (yttrium aluminum garnet), GGG (gadolinium gallium garnet), CZ (synthetic zircon dioxide), and synthetic carbon silica. In addition, synthetic diamonds have almost the same properties as natural diamonds, so the above methods can only give you a reference. The results of are not necessarily accurate. The best way is to send the diamonds to an independent gem identification institute to test the gems. (Photo/Text Jewelry Home Echo)