How can you tell the difference between real and fake Overlord Gold?
How to identify gold:
(1) Look at the color: the higher the purity of gold jewelry, the darker the color. In the absence of gold medals, the general fineness can be determined according to the following colors (taking lapis lazuli as the criterion. The so-called lapis lazuli means that gold only contains silver); the fineness of dark reddish yellow is above 95%, and that of light reddish yellow is 90-95% , light yellow is 80--85%, bluish-yellow 65-70%, bluish-white color is only 50--60%, slightly yellowish and white is less than 50%. The commonly referred to as seven green, eight yellow, and nine red can be used as a reference.
(2) Weigh the weight: The specific gravity of gold is 19.32, which is heavier than silver, copper, lead, zinc, aluminum and other metals. Gold by volume is more than 40% heavier than silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. Gold jewelry should feel heavy in the hand, while fake gold jewelry should feel light. This method does not apply to gold jewelry set with gemstones.
(3) Look at the hardness: pure gold is soft and has low hardness. It can make shallow marks with nails and bite marks with teeth. Gold jewelry with high fineness is softer than gold jewelry with low fineness. The more copper it contains, the more gold jewelry it contains. The more it is, the harder it is. The bending method can also test the hardness. Pure gold is soft and easy to bend. The lower the purity, the harder it is to bend.
(4) Listen to the sound: If real gold with a fineness of more than 99% is thrown on the hard ground, it will make a clicking sound, which is soundless and has no elasticity. Fake or low-quality gold has a crisp sound without dullness. It usually makes a "dang-dang" sound with lingering sound, and beats violently after landing.
(5) Burn with fire: Use fire to burn the jewelry to be identified (do not melt or deform the jewelry). After cooling, observe the color change. If the surface still has the original gold color, it is pure gold; if the color changes, Dark or varying degrees of blackening, it is not pure gold. Generally, the lower the fineness, the thicker the color, and if everything turns black, it means it is fake gold jewelry.
(6) Look at the markings: Domestic gold jewelry is purified and formulated according to international standards and marked with stamps. For example, "24K" indicates "pure gold" or "pure gold"; 18K gold indicates "pure gold". If the word "18K" is used and the fineness is lower than loK, according to regulations, it cannot be stamped with a K gold seal number. At present, criminals in society often make fake brands, imitate stamps, and use rare gold, sub-gold, and even brass to pass off as real gold. Therefore, the identification of gold jewelry requires comprehensive judgment based on samples to determine the authenticity. ① Identification of engraving: Real gold jewelry is It is engraved with font sizes and marks, such as 24K, 18K, 14K, 12K, "Zuchi", "Jiucheng (Cheng)", "Wucheng (Cheng)", and the name of Yinlou Gold Store. Platinum jewelry is engraved with "Platinum", "P.t", "P.m"; silver jewelry is stamped with "Pure Silver", "Nine Star Silver", etc.
②Concentrated nitric acid dripping test: nitric acid will not discolor when dropped on gold and platinum, turns green when dropped on copper, and turns black when dropped on silver. ③Look and feel: Really golden and bright, with a heavy hand feel. Fake gold and imitation gold have poor brightness and light weight. ④Heating test: Gold does not change color within 1000℃ and still has luster. Copper changes color after it is smelted.
⑤ Identification of ingredients: In China, touchstones are generally used, and ground gold powder is used to compare with the original touchstones. Methods to identify sterling silver:
(1) Look at the color (also known as looking at the surface) test: the higher the purity, the whiter the silver, and the surface will be fine, even, shiny and polished. If it contains lead, the surface will have a bluish-gray color; if it contains copper, the surface will appear rough and rotten, with a dry feeling. Although oxidized silver has "black rust" on the surface, its color is black and bright. Lead, tin, and white copper have no luster and their color is dull.
(2) Weighing the weight: The density of silver is slightly larger than that of common metals. Generally speaking: "Aluminum is light, silver is heavy, and copper is neither light nor heavy." Therefore, weighing can determine its weight. Make a preliminary judgment on whether it is silver. If the jewelry is larger in size and lighter in weight, it can be preliminarily determined that the jewelry is made of other metals.
(3) Check the hardness: The hardness of silver is lower than that of copper, but larger than that of lead and tin. Therefore, use a pin to scratch the surface of the physical object for testing. If the needle slips and it is difficult to leave traces on the surface, then It can be judged to be copper jewelry; if it is made of lead and tin, the traces will be obvious and prominent; if the traces are not obvious on the actual object, it can be preliminarily judged to be silver jewelry.
Pure silver jewelry can be deformed by pulling it by hand and folding it.
(4) Listen to the rhyme: If the jewelry is made of high-quality silver, it will have no rhyme and no elasticity when thrown to the ground, and the sound will be "porphyra da porphyra". The lower the color, the lower the sound, and the sharper the sound, the higher and rhymed it is; if it is made of copper, the sound will be higher and sharper, and the rhyme will be rapid and short; if it is made of lead or tin, the sound of throwing the ground will be dull and short. No stretch.
(5) Determine the color by looking at the stubble: Cut the silver jewelry and look at the color of the stubble. If the stubble is white
and fine, and the surface becomes black and shiny after oxidation, you can judge it. The fineness is around 98; if the stubble is thick and soft, slightly red, the fineness is around 95; if the stubble is white and gray, slightly reddish, the fineness is around 90; if it is harder to bend by hand, the stubble will be light red or gray. Its color is about 80; silver with a color of about 70 has a white-yellow and dry surface, a slightly reddish and yellow stubble, and a hard bend; if the stubble lipstick has black in it and yellow in black, its color is below 60. .
(6) Characteristics of counterfeit silver: Counterfeit silver is generally made of red copper, brass, white copper, lead, tin, aluminum, etc. Its characteristics are: Red copper: purple-red appearance, stubble mouth Black and red, with green embroidery. Brass: yellow in appearance, pea green in stubble, and green embroidery. White copper: grayish white in appearance, gray in texture and green embroidery. Lead: grey-blue, soft, can be scratched with fingernails. Tin: silvery white, soft, can be scratched with nails.
Gold
1. Color: Gold jewelry with a fineness of more than 70 is yellow with green color, and gold jewelry with a fineness of more than 80 is basically yellow. As long as the fineness is above 90, including what we often say The ninety-nine gold and ninety-five kinds of gold have bright colors without any mixed impurities of black, gray and blue.
2. Weight: Gold is small and heavy. When weighed in the palm of your hand, it will have an obvious sinking feeling.
3. Softness: The higher the fineness of gold jewelry, the softer and less elastic it is. Real gold will have light marks when bitten with teeth or scratched with a needle. There will be no breakage when broken by hand, and it will not change color after being burned. . Low quality and fake ones are just the opposite. Pure gold is relatively soft and generally cannot be made into jewelry with complex shapes and hollow carvings. If you encounter jewelry with too complicated shapes, you should be vigilant. 4. Sound: "The sound of death" is gold
High-quality gold jewelry will make a dull clicking sound when thrown on the cement floor. It is sound but has no rhyme, and does not bounce back. It is commonly known as "" The sound of death”. On the contrary, gold jewelry of low quality has a rhyme and a sharp sound when thrown on the cement floor, and bounces back slightly.