First Collection of Argyle Diamonds Donated to the Smithsonian Institution
By Erika Winters Rio Tinto has donated 500 carats of Argyle rough diamonds to the Smithsonian Institution. Image courtesy of Rio Tinto. Rio Tinto has donated 500 carats of rough diamonds from its Argyle mine to the Smithsonian Institution in Washington, D.C. The donation, which will be exhibited a...
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