Is there any expert who knows what kind of seal is the gold jewelry of the major brands on the market today? There is a mark (the abbreviation of letters) that can be distinguished as a brand of this brand.
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Jewelry marks should include manufacturers' codes and precious metal materials names and content.
Thousands of gold and referring to gold are not less than 999.
K gold, generally refers to gold content from 8K to 24K precious metal jewelry [1K = 4.1666 „ %] marked at 24K, 18K, 9K or 750 [ie gold content 75 %, also known as 18K], 583, 583, 583 [Gold content 58.3 %, equivalent to 14K] and so on.
This gold is equipped with various other metals such as other metals, aluminum, silver, cadmium, cadmium, etc., so that the jewelry presents purple red, pink, blue, green, gray and other colors. Platinum, people often think that it is a type of platinum land. In fact, 18K platinum is 75 % gold containing gold, 10 % silver -containing, 10 % zinc, and 5 % of nickel -containing white gold. 33,000 gold.
The content of foot platinum and platinum is not less than 990, and "foot platinum" or "PT990" marks. The 950 platinum and platinum content is not less than 950, and the "platinum 950" or "PT950" mark is played. The 900 platinum and platinum content is not less than 900, and the "platinum 900" or "PT900" mark.
850 platinum and platinum content is not less than 850, and the platinum 850 or the "PT850" mark.
thalum in platinum jewelry is mainly the same elements of the same ethnic element [PB]. Jewelry land is also represented by thousands of points in the silver content: foot silver and silver content is not less than 990, and "foot silver" marks or marked according to the actual content. Play "Silver 925" or "S925" mark.
I Gold plating, is plating a layer of extremely thin golden gold on the surface of silver or copper jewelry on the surface of silver or copper. The standard gold plating layer in my country is not less than 0.5um. , Gold -plated jewelry landmarks are "GP" or "KP".
Bukin, wrap the gold foil on the surface of the metal materials such as silver, copper, etc., the gold foil has not less than 10k, and the weight is not less than 1/20 of the total weight of the material. It is often expressed in KF.
Forging gold and essentially affiliated with Baimin, under high temperature and high pressure conditions, the gold foil is forged on the surface of other metal jewelry rough. Gold foil land is greater than 10K, of which the total amount of K gold for forging places must not be less than 5 % of the finished product land. It is marked as "GF" or "KGF". The surface of the forging gold has strong hardness and high abrasion resistance, and it is not easy to lose the gold texture.
The jewelry of each brand will play its own brand in a certain part of the jewelry, regardless of the size of the brand. For example, the jewelery sold by Lao Fengxiang will engrave "Lao Fengxiang" and Asia for a while "Asia 1" with English letters.