The largest gold nugget ever found weighed over 200 pounds: Known as the “Welcome Stranger,” the largest gold nugget ever discovered was found in Australia in 1869. It weighed a staggering 2316 troy ounces, which is equivalent to about 158 pounds or 72 kilograms.
The Olympic gold medal is mostly made of silver: While Olympic gold medals are highly sought after, they are predominantly made of silver. The gold medal contains a minimal amount of gold plating, with the majority of the medal composed of silver.