Jewelry and precious stones on the world market have an annual transaction volume of over US $ 100 billion. Since 1985, they have enjoyed a large growth in exports from China. In 1990, the export volume was US $ 157 million, in 1991——US $ 250 million, in 1992——US $ 250 million, in 1993——US $ 670 million and in 1994——US $
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