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Sotheby's 苏富比香港秋拍 「Infinite Blue」蓝钻戒指 主石为一颗11.28ct雷迪恩型切割蓝钻,经 GIA 鉴定为 Fancy Vivid Blue 色级和 VS2 净度级别,为 Type IIb 型钻石。镶嵌2颗梯形切割无色钻石,镶嵌圆形切割粉钻。戒指采用玫瑰金和白金制作。成交价1.9822亿港元(De Beers 稀有蓝钻系列「The De Beers Exceptional Blue Collection」之一「Infinite Blue」蓝钻切割前原石重达25.73ct,由 Petra Diamonds 于2020年9月开采自南非 Cullinan 矿区
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