Purity: the gold content of 999 gold is about 99.9%, and the gold content of 9999 gold is about 99.99%; Color: The color of 999 gold is not as good as that of 9999 gold. The purity of 9999 gold is high and the surface color is red, yellow and bright. Hardness: The hardness of 999 gold is relatively high, and its ductility is not as good as that of 9999 gold. 9999 gold is soft and malleable.

1, 9999 gold

The purity of 999 gold is different from that of 9999 gold. The gold content of 999 gold is about 99.9%, that is, thousands of gold, which is the highest purity gold in the national standard. 9999 gold refers to gold with a gold content of about 99.99%, which is called Wanjinjin.

2, color 999 gold

The color of 999 gold is different from that of 9999 gold. Because of its purity, 999 gold is slightly inferior in color and relatively simple. 9999 gold has high purity, bright red and lustrous surface, and a moist feeling.

3. Gold with hardness of 9999

999 gold and 9999 gold have different hardness. 999 gold has higher hardness, but its ductility is not as good as 9999 gold. 9999 gold is very soft and malleable because of its high silver content.