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GIA Facetware® 是一项免费的在线服务，允许您访问 GIA 数据库中超过 3850 万种钻石比例设置，便于您对 GIA D 到 Z 颜色范围内，及“无瑕级”到“I3”净度范围内的标准圆明亮型切工钻石进行切工等级评估。
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