Green gems are more expensive. Emerald is the most expensive among green gems. In front of colored diamond, ruby and sapphire and other common colored gems, he can only be regarded as a little brother. But for emeralds, its price is much higher than other colors of gems! Because the output of emeralds is very rare and it is very difficult to mine, it is precious to have rare things. Speaking of top emeralds, the first thing that comes to mind is "Colombia"! After all, the emeralds produced in this area have the highest quality and the largest quantity, and are recognized as "high-quality emeralds producing areas". One of the most famous is the emeralds in Muzo and Chival mining areas! These two mining areas are one of the largest suppliers of high-quality emeralds in the world. They are located in two locations in northern Colombia, and their history can be traced back to about 1300 BC (although some people say that they existed as early as15th century). Due to the geographical location, these two mines are in virgin forests, surrounded by mountains, and the climate is cold and dry, so they can only be mined in summer every year. Therefore, these conditions make the mineral resources here very precious, and the locals call it "Emerald Valley" or "Emerald Valley". Russia is also one of the world-famous jadeite producers, mainly distributed in the eastern Ural Mountains near the Caucasus Mountains. Most emeralds produced in this area have small particles and relatively low clarity, but they are bright in color, high in transparency and strong in fluorescence reaction.