Changhua cornelian stone, the unipue precious stone in China, shiny red, spardling, and crystalclear, same treasured asjewels and jadeite by pelple through ages, is renowned as one of China national treasures. It is produced in Yuyan Mountain, the source of West Zhejiang tourist grand canyon, Lin'an, Zhejiang, where used to be called Changhua, hence its name Changhua cornelian stone. Various multi-colored cornelian, modern times. White-red-black is as "Liu-Guan-Zhang", the three well-known sworn brothers in the Three Kingdoms-Wei, Shu Han and Wu -which divided China from A.D. 222-280.