With the rapid development of technology, the need to identify gold requires a wealth of experience, experts from China Jewelry Merchants Network to show you how to identify gold .
(1) Look at the color: the higher the purity of gold jewelry, the deeper the color. In the absence of a gold medal, the general color can be determined according to the following color (according to the green gold standard. The so-called green gold is only containing silver in gold): deep red and yellow color is above 95%, light red yellow is 90% to 95%. , light yellow is 80% ~ 85%, blue yellow is 65% ~ 70%, color green with white light only 50% ~ 60%, yellowish and white is less than 50%. The commonly mentioned seven green, eight yellow, nine red can be used as a reference.
(2) 掂 Weight: The specific gravity of gold is 19:32, which is heavier than metals such as silver, copper, lead, zinc and aluminum. Like the volume of gold, it is more than 40% heavier than silver, 1.2 times heavier than copper and 6.1 times heavier than aluminum. Gold jewelry should have a sense of sinking in the hands, and fake gold jewelry will feel light. This method does not apply to gold ornaments with gemstones.
(3) Look at the hardness: pure gold is soft, low hardness, can be traced with nails, tooth bite can leave a tooth print, gold jewelry with high color is softer than color, and the more copper, the harder it is, the bending method It can also test the hardness. The pure gold is soft and easy to bend. The lower the purity, the more difficult it is to bend.
(4) Listening to the sound: If the color is more than 99% of the real gold thrown on the hard ground, it will make a loud noise, no sound and no elasticity. The fake or low-quality gold sound is crisp and not dull, and generally gives a "dangdang" sound, and the sound has a residual sound.
(5) Use fire to burn: use the fire to burn the jewelry to be identified (do not melt the jewelry), observe the color change after cooling, if the surface is still the original gold color is pure gold; if the color becomes darker or blackened to varying degrees, It is not pure gold. Generally, the lower the color, the stronger the color, and all the black, indicating that it is a fake gold jewelry.
(6) Look at the mark: domestic gold ornaments are made according to international standards, and stamped, such as "24K" marked "foot red" or "foot gold"; 18K gold, marked "18K"; color is lower than 10K, according to the regulations can not play K gold printing. At present, lawless elements in the society often use fake stamps and imitation stamps to impersonate real gold with thin gold, gold, and even brass. Therefore, it is necessary to determine the true and false and the color of the gold jewelry according to the comprehensive judgment of the sample.
In summary, it is the six methods to distinguish gold. I believe it will help you. For more details, please pay attention to China Jewelry Merchants.com .
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