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1998年4季度,北京市技术监督局委派北京市珠宝玉石质量监督检验站对全市范围内有影响且占有重大比重的22家大中型商场、5家珠宝宝石饰品专卖店及3家珠宝玉石市场进行了质量监督抽查。抽查的珠宝玉石产品种类是钻石戒指、钻石项链坠等钻石饰品,检验项目为判定饰品出售时标识的净度级别、颜色级别及品质级别是否合格。通过对30家商业企业共计155件钻石饰品
In the fourth quarter of 1998, the Beijing Municipal Bureau of Technical Supervision appointed the Beijing Municipal Jewellery and Jade Quality Supervision and Inspection Station to carry out 22 large and medium sized shopping malls, 5 jewellery gemstone jewelry stores and 3 jewellery and jade markets that have a significant impact on the city. Quality supervision checks. The types of gems and jade products spotted are diamond rings, diamond necklaces and other diamond ornaments. The inspection item is to determine whether the grade, color level and quality level of the jewelry when the jewelry is sold are qualified. Through a total of 155 diamond jewelry for 30 commercial companies