I’ve got your Olympic medal trivia right here. The 2008 medals, produced by the Shanghai Mint, are inlaid with jade on the reverse side. A different color of jade is used for each medal type with the lightest, most precious shade backing the gold. The stone for the jade rings comes from the Kunlun Mountains. Setting the jade into the medals posed several challenges. The jade needs to stay firmly attached to the metal. It is held in with a seal ring and also some glue for good measure. The medal also had to pass a drop test, quality assurance that the jade would not shatter. Oh, and the gold medal is actually silver with six grams of gold plating.