The growing popularity of Hetian jade collection has led to a rapid spread of counterfeit and substandard products in both raw materials and finished products. Especially Hetian white jade, which is highly favored by collectors, has become the primary target for counterfeiters. For example, White Dongling stone is passed off as Hetian white jade, white-colored marble (also known as Han white jade) is used to impersonate white jade, white glass (material) is sold as white jade, and Russian or Qinghai materials are mixed with Hetian materials (strictly speaking, Russian and Qinghai materials are not inferior to Hetian materials in terms of gemstone properties; the price difference is merely due to market perception - this is another topic altogether).