TRANSLATED TO ENGLISH FOR ENGLISH READERS...

What is the purity of the Olympic gold medal?

The top two and three in the Olympics won gold, silver and bronze medals respectively. Only the silver medal is pure silver, the gold medal is not pure gold, and the bronze medal is not pure copper.

According to the regulations of the International Olympic Committee, each medal must be at least 60 mm in diameter and 3 mm in thickness.

According to the regulations on the weight of medals, the weight of gold medals must be greater than 244.5 grams, the weight of silver medals must be greater than 269 grams, and the weight of bronze medals must be greater than 224 grams.

The International Olympic Committee stipulates that the material ratio of gold medals is fixed. Gold medals are mixed with silver and copper and then plated with gold. The content of gold shall not be less than 6 grams, the content of silver shall be at least 92.5%, and the remainder shall be copper.

The bronze medal is a mixture of copper and zinc, with copper accounting for about 95% to 98%, with the remainder being zinc.