How to identify gold jewelry

Gold jewelry refers to jewelry made with gold as the main raw material. The chemical symbol of gold is Au, the specific gravity is 17.4, and the Mohs hardness is 2.5. Gold jewelry can be divided into pure gold and gold in terms of its content. The gold content of pure gold jewelry is more than 99%, and the highest can reach 99%. 99%. Therefore, there is also 'Gold jewelry refers to jewelry made with gold as the main raw material. The chemical symbol of gold is au, the specific gravity is 17.4, and the Mohs hardness is 2.5. Gold jewelry can be divided into pure gold and gold in terms of its content. Two types. The gold content of pure gold jewelry is more than 99%, and the highest can reach 99.99%. Therefore, it is also called 'Nine-Nine Gold'/Full Gold' and 'Red Gold'. Gold jewelry is the addition of other materials to the gold material. Jewelry made of different metals (such as silver and copper) is also known as 'open gold' and 'fine gold'. Because of the amount of other gold added, different types of gold jewelry are formed. Among gold jewellery, pure gold jewellery has a soft texture, with marks on the teeth, easy to bend, golden color, pure and soft, heavy hand feel, and a heavy feeling. K gold jewellery is hard, no marks on the teeth, and the color is yellow. It is white, and according to the decrease in the number of gold, the white gradually increases, and the yellow gradually becomes lighter. The touch of gold jewelry is not as heavy as pure gold jewelry. In addition, whether it is pure gold or k, there is a seal. The seal on gold jewelry, It can be represented by the word'gold' and the English letter'one'. It indicates the corresponding k number. In addition, there are seals of the origin of different manufacturers on the jewelry. Gold-plated jewelry is plated on the surface of other metal jewelry by electroplating The upper layer is golden, the color is similar to real gold jewelry, it is golden and bright, and it is difficult to recognize when new. However, the gold jewelry has a lighter touch and a harder texture. The teeth bite the original mark, and it will fade after a long time. Some electric blocks are not good The color of gold jewelry is either reddish, whitish, or flowery. Gold-coated jewelry refers to the surface of other golden eagles covered with 24 or 22k gold foil. For example, the pressure of the gold box is large and its softness is poor. The appearance of the gold head is similar to real gold jewelry. It is shiny and hard to fade, making it difficult to distinguish between true and false. However, if you carefully observe the recesses, corners, and back of the jewelry, you can find that there are uneven gold foils and warped edges. The phenomenon of peeling, such as broken joints on the jewelry, can be seen from this that the broken trade of the gold bureau material is yellow on the outside and white on the inside. In addition, the gold-clad jewelry has a lighter feel, and the texture is harder than pure gold jewelry. It is not easy to bend, and the gold leaf is easy to peel off when worn for a long time. Whether it is gold jewelry, gold-covered jewelry, or copper jewelry, generally does not carry a seal similar to gold jewelry. Or the seal is different from gold jewelry, if any jewelry is engraved There are English letters'gk', which means'gold-plated'. Or the printed signature is vague or oblique. Consumers should identify whether there is a seal on the jewelry, whether the seal meets the above regulations, whether the seal is clear, etc. The content is used to judge the authenticity of gold jewelry. Previous: Encyclopedia of gold knowledge Next: Gold culture and health preservation