Shoushan Stone successional variation process is:a kind of soft jade which was precipitated 150 million year ago after volcanic eruption producesall over the world.This soft jade is only produced in a small mountain village (about 5 square kilometers places) in Fuzhou Fujian Chinese .It has been mined in China more than 2,000 years.It is most deeply liked by all previous dynasties emperor,also is the first choice jade which the famous expert and the modernpeople strives to be the first to collect.It has been already dug to underground several hundred metersdepths.It will be disappeared after 10 years.If you have collect this jade,the price will be several dozens times of or several hundred time increment.So please do not miss the only jade of the world.