3 thoughts on “Should 51 and 750 mean on the diamond ring mean?”

  1. The G750 is actually the same as 18K, just two different names. Because the purity of the gold is higher, the higher the gold, the softer the gold, so the gold cannot inlaid any gems. The ingredients of the G750 are 75%gold, and then the other 25%are made of copper, iron, zinc, 钯, silver and other metals. The G750 made in this way is much higher than the hardness of gold. It can be made into any style, and the price is cheap, so the G750 is generally used in gemstones.

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