Gold Panda Coins of China 30g. Diameter 32mm, weight 30 grams of .999 fine gold. This Panda coin is sealed in the original plastic as issued directly from the Chinese mint. Chinese Panda gold and silver coins have become one of the major investment coins in the world coin market. They are characterized not only by their investability but also their collectability for the design of Panda coin change every year, which increases the artistic attraction and collective value of the coin. Panda coin is one of China's most important coin programs each year.