A royal blue sapphire and diamond necklace (102.61ct) completely free of heat treatment and virtually inclusion-free was sold for US$4,179,487 million.

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A royal blue sapphire and diamond necklace (102.61ct) completely free of heat treatment and virtually inclusion-free was sold for US$4,179,487 million.

A royal blue sapphire and diamond necklace (102.61ct) completely free of heat treatment and virtually inclusion-free was sold for US$4,179,487 million.