There are many kinds of ring materials, such as 18k gold, platinum, palladium, etc., of which the ring material au750 represents the material used to make the ring, au750 is commonly known as 18k gold, au750 represents the material used to make the ring. The elemental symbol of gold is au, 750 refers to its gold content of 750 parts per thousand, which is usually engraved on the inner wall of the ring or can be seen on the tag.
Ring rest material
Advantages: affordable, good stability is not easy to deformation.
Disadvantages: long-term wear glossiness decreased.
Advantages: Relatively light, need careful care when wearing.
Disadvantages: poor ductility, fracture problems.
3. Platinum
Disadvantages: Slightly higher price.