How to tell the authenticity of a diamond pendant
1. Check the gloss and disperse the colored light.
Polished diamonds are more shiny than rough diamonds. At the same time, the standard cut diamond can better show its unique characteristics of strong scattering color light, which is characterized by rich colors and dynamic "fire color". Compared with imitation diamond, which has the unique characteristics of high dispersion color light, the dispersion color light of diamond is soft, while the dispersion color light of imitation diamond is mechanical and dazzling. However, it needs a lot of practice to accurately control the difference of scattered color light between diamond and imitation diamond.
2. Identification test of linear diamonds
Because diamond cutting is usually standard, almost no light can pass through the facets of the craft pavilion, when the diamond sample is placed on a piece of paper with black lines, the black lines on the paper are invisible. The same phenomenon can occasionally appear on diamond imitations with high refractive index, such as artificial strontium titanate and artificial rutile, which have no black line and need attention; But for those imitations with low refractive index, you can see the curved black line.
3. Harbin Diamond Identification Experiment
Take a breath on the test sample. If the water vapor covering the appearance of the sample quickly dissipates and is fresh, the sample is declared as a diamond. On the contrary, if the water vapor slowly disappears on the appearance of the sample, it is declared that the sample is an imitation of a diamond. This is because of the high thermal conductivity of diamonds. This is also called "breathing experiment" or "fog experiment". When doing this experiment, if the sample is very small, you need to look at it with a magnifying glass. In addition, this method is not suitable for summer because the evaporation rate of water vapor is greatly influenced by room temperature.
4. Perspective effect
This is a diamond identification method to determine the relative refractive index of transparent round diamond jewelry (especially suitable for jewelry samples with refractive index greater than 1.80). The measurement method is to put the desktop or bottom tip of the sample to be measured down on the paper with handwriting, and see the scale with clear handwriting through the sample. If the scale with clear handwriting is smaller, the refractive index of the sample is larger.
How to tell the authenticity of a diamond pendant?
Test with an oily pen.
A special pen or ballpoint pen oily ink can also tell you how to distinguish diamonds from real ones. Draw a line on the diamond table. If you leave an uninterrupted straight line, it means that such a diamond is real. However, if there is a dotted line at the scribing point, it means it is an imitation. However, testing in this way requires observation with a magnifying glass.
Key points of diamond pendant purchase
Step 1: Adhere to the 4C principle.
The diamond pendant consists of two parts, one is the shell inlaid with diamonds, and the other is the diamonds inside. The familiar 4c standard for judging the value of diamonds is a cliche, but it will always be the basic standard for judging the quality of diamonds.
Step 2: Look at the mosaic material.
The material of diamond inlay is also a part that affects the overall aesthetic feeling of the pendant, and the quality of the material is directly related to the brilliance that the diamond can present. Although there are many kinds of materials, the most common one is non-K gold, and 18K gold is a typical example. In order to ensure the overall beauty of the diamond pendant, it is really necessary to get the material advantages and purchasing skills of inlaid diamonds.
Step 3: Choose the right shape and score more points.
The embellishment of ornaments is a plus item of the overall shape, but if it is too ordinary, it is difficult to wear a trendy feeling. When choosing diamond pendants, different faces choose different styles.
What kind of diamond pendant is good?
When it comes to diamond necklace pendants, whether platinum, gold or silver ornaments, the most valuable core part is diamonds. Therefore, when choosing a diamond necklace pendant, the key object should be diamonds. With the popularity of diamonds, diamond knowledge is no longer a mystery. The main factors that determine the quality of a diamond are the diamond 4C, that is, the size, color, cut and clarity of the diamond. These four parameters * * * all determine the quality of the diamond, among which the cutting is the only parameter controlled by artificial factors, which tests the artificial skills and directly affects the fire color of the diamond.
Among many foreign brands engaged in diamond business, there are many well-known brands, such as De Beers, Harry Winston and Cartier. Among them, De Beers' diamond products mainly focus on highlighting the nobility and dream of diamonds, and most of its target groups have petty bourgeoisie sentiment and pursue fashion and taste; On the other hand, Harry Winston is famous for his exquisite diamond cutting technology, and is deeply loved by the royal family and Hollywood movie stars. Cartier diamonds are also famous for their unique elegance, luxury, agility and exquisiteness.