1. material: AU999 is gold, and 24K represents the purity of gold, with different materials.
2. Purity: The purity of AU999 is higher than 24K, the gold content of AU999 is 999/ 1000, and the gold content of 24K gold is 65438+24/ 10000, that is, 24/ 1000.
Generally speaking, the purity of AU999 gold is higher than 24K, which has obvious advantages in both material and purity.