Au750 stands for platinum and platinum, and its gold content is 18K, that is, platinum (Pt). Its chemical properties are more stable than gold and its price is higher than that of Huang Jingui, so it is used to make high-grade jewelry. The "Pt900" or "Pt950" seen on jewelry products represent that the platinum content in jewelry is 90% and 95% respectively.

pure

The purity of platinum jewelry is generally 95%, while the purity of 18k gold is only 75%. No metal can be completely pure, and there are impurities mixed with other metals. Platinum has almost no impurities, and its purity is extremely high. It will not fade and change color, and it can still maintain its luster over time. The pure white luster of platinum can well reflect the true light of diamonds.

infrequent

Platinum is 35 times rarer than gold. In the world, it can only be mined in a few places, mainly South Africa and Russia, as well as a few areas in Zimbabwe, Canada and South America. Only 88 tons of platinum is made into ornaments every year, while 2700 tons of gold. The quantity of platinum ore is less, and the ratio of platinum ore to gold ore is 1 to 10.

eternal

The density and weight of platinum make it more durable than other jewelry metals. All precious metals leave scratches, including platinum. However, the scratches on platinum only move the metal and will not reduce its volume, while the scratches on gold will bring wear and reduce the volume of gold. If there are visible scratches on platinum, a qualified jeweler can re-polish it.