Because the gold content of gold ore is generally very low, the gold content of mined ore is generally only about 8-30g/t. According to this calculation, the highest gold content of 100g gold ore is only 3.5g, and the gold refining cost is only 20-30g, even in the country with the best technology. In this way, the gold content in 100g gold ore must reach at least 50g before it can be extracted, so the gold content in 100g gold ore must reach at least 50g, and the value is about 17000 yuan.

So there are basically no gold fakes.