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国际钻石四大加工中心印度孟买拥有世界最大的钻石加工业,职工人数约40万,年加工钻石600万克拉,1987年琢钻出口额达17亿美元,主要销往比利时、香港、日本和美国。印度的钻石加工企业一般规模小,主要从事小颗粒钻石加工,产品质量不太高。美国纽约以从事大颗粒优质钻石的切割加工为主,它是世界上最大的琢钻进口市场,总进口额达60亿美元,进口数量占世界琢钻总产量的30%。美国也是钻石首饰销售额最大的国家。比利时安特卫普以手艺精湛、质量优异而闻名世界的钻石加工城。有职工8000人以上。又是国际上最大的钻石交易中心,1991年钻石交易额占世界份额的50%,它拥有3500个交易人和经纪商,经营全球粗钻总量的85%,约6000万克拉。以色列特拉维夫擅长精致小件的钻石加工,生产
The four major international diamond processing centers in Mumbai, India have the world’s largest diamond processing industry, with approximately 400,000 employees, processing 6 million carats of diamonds each year, and exported 1.7 billion U.S. dollars in 1987, mainly to Belgium, Hong Kong, Japan and the United States. . India’s diamond processing companies are generally small in size, mainly engaged in the processing of small-grained diamonds, and the quality of products is not very high. New York, the United States, is mainly engaged in the cutting and processing of large-grained, high-quality diamonds. It is the world’s largest import market for boring diamonds with a total import value of US$6 billion, and imports account for 30% of the world’s total output. The United States is also the country with the largest sales of diamond jewelry. Antwerp, Belgium is a world-renowned diamond processing city with exquisite craftsmanship and quality. There are more than 8,000 employees. It is also the largest diamond trading center in the world. In 1991, the diamond trading accounted for 50% of the world’s share. It has 3,500 traders and brokers, and operates 85% of the world’s total rough diamonds, which is approximately 60 million carats. Israel Tel Aviv specializes in fine small pieces of diamond processing, production