What do you think of the diamond necklace?
1. The first is the pencil and pen recognition method. After the diamond is wet with water, scratch it with a pencil, and there will be no pencil marks on the surface of the real diamond. Transparent fake diamonds such as crystal, glass and tourmaline will leave traces, or draw lines on the diamonds after dipping in ink with a pen. The lines of real diamonds under a magnifying glass are made up of dots.
2. Touch recognition method. Wear a diamond on your arm or face. If it feels warm, it is a fake diamond. Because real diamonds don't transfer heat, no matter how you touch them, they should be cold.
3. You can also use Harbin gas identification method to identify the authenticity of diamond necklaces. Breathe into the diamond. If the water vapor on the diamond disappears immediately, it proves to be a real diamond. If the water vapor stays on the diamond for a few seconds and then disappears, it is a fake diamond.
The hardness of diamond is so strong that it is difficult to leave a notch on it with a blade. Therefore, how to identify the authenticity of diamond necklaces, characterization is also a method of identification. In addition, a slight scratch on the glass with diamonds will leave more obvious white marks. Fake diamonds do not have this phenomenon. Or rub the diamond back and forth on fine sandpaper for several times. The ones with scratches on the surface are fake diamonds, and the ones without scratches are real diamonds.
How to identify the authenticity of a diamond necklace
It can be distinguished by the refractive index of a diamond: draw a blue straight line on a piece of white paper with a ballpoint pen. Put the diamond face down and the tip up on this line. If you can't see the line through the stone, it is a real diamond; If you can see the line, it's fake. Because the diamond has the property of refracting light, the light entering from the diamond table is basically reflected, which is also the reason why the diamond shows rainbow spectrum under the illumination of light.
Fog experiment is also an effective method to identify genuine and fake diamonds. Fake diamonds don't dissipate heat as fast as real diamonds. Breathe into the diamond. If the water vapor on the diamond disappears immediately, it is true. If the water vapor stays on the diamond for a few seconds and then disappears, it is false.
These two simple methods can distinguish diamonds to some extent. Why do you say it is to some extent? Because there are many kinds of fake diamonds, such as colorless gemstones, colorless spinel, cubic zirconia, strontium titanate, yttrium aluminum garnet, yttrium gallium garnet, artificial rutile and so on. The most powerful is synthetic diamonds. Therefore, it is best to go to a professional appraisal office for inspection, or go to a diamond jewelry brand for verification. General diamond jewelry brand stores will have instruments to detect the authenticity of diamonds.
How to choose a diamond necklace
1. color
Most white diamonds that can be used as jewelry range in color from white to yellow. The color of white diamonds is determined by internationally recognized color samples. Colors are graded from colorless D to yellow Z. Diamonds may also be brown, orange, pink or blue. The strongest color is called' positive color' and will be marked as' fancy' on the certificate. These colored diamond are extremely rare, so they are more expensive than white diamonds.
Step 2 be clear
To determine the clarity or purity of diamonds, appraisers need to observe them with a magnifying glass of 10 times. Most diamonds are born with an imprint called inclusion. The fewer flaws, the more light passing through the diamond, and the brighter the diamond. If the clarity of a diamond is good enough, it will shine more brightly than any other gem. The clarity grade is divided into 6 categories, 1 1 grade.
How to maintain a diamond necklace
1. When you take off the diamond necklace, you must put it in the original box alone. Only in this way, the diamond necklace will not be affected by the magnetic field reaction.
2. In fact, the cleaning method of diamond necklace is also very important. You just need to choose a soft cotton cloth, dip it in detergent, gently scrub it, and then wash it with water.