1 thought on “Only 750 is written on the necklace, and there is no AU or G logo. What material is this?”

  1. Consultation record · Answer on 2021-11-08nOnly 750 is written on the necklace, and there is no AU or G logo. What material is this? 1. 750 printed on the necklace refers to alloys containing 75%gold and 25%of other metals, commonly known as 18K gold. It is usually used to make jewelry, and the jewelry is marked as G18K, G750 or AU750. Therefore, if your jewelry is marked with AU750, it means 18K. 2. In the metal name, AU means gold. Therefore, the AU750 necklace is gold alloy. Gold alloys are made of some non -gold metal materials to pure gold, such as copper, silver, and zinc. These metals and pure gold have been blended with different proportion of gold alloys. The AU750 on the necklace is the meaning of 75%of the gold content, and 25%of the components are other metals. Therefore, the AU750 on the necklace represents gold content. The general content explains the general purity of pure platinum jewelry of 95 %, while the purity of 18K gold is only 75 %. It is impossible for any metal to be completely pure, with impurities and mixed with other metals. Platinum has almost no impurities, and the purity is extremely high, so it will not fade or change color, and it can still be shiny in the passage of time. Platinum pure white luster can reflect the real light of diamonds. Rare platinum is 35 times more rare than gold. In the world, it can only be mined in very few places. It is mainly located in South Africa and Russia, as well as a few areas of Zimbabwe, Canada, and South America. Each year, only 88 tons of platinum is made into jewelry, while gold has 2700 tons. The number of platinum ore is less, the proportion of gold ore is 1 to 10. The density and weight of eternal platinum make it more durable than other jewelry metal. All valuable metals will leave scratches, and platinum is no exception. However, the scratches on platinum only move the metal and will not reduce its volume, and the gold scratches will bring wear and reduce the volume of gold. If there are indeed scratches on the naked eye on the platinum, qualified jewelry vendors can be polished for it.

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