There's no need. The rules explain that it's not solid gold.
"... according to Olympic rules, gold medals must be at least 92.5 percent silver and then coated with roughly six grams of pure gold. (Silver medals are similarly 92.5 percent silver, while bronze medals are made of copper and other alloys.)"
https://www.britannica.com/sports/Are-Olympic-Medals-Made-of-Gold
