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Gemmological Aspects of the Vila Pouca da Beira Monstrance in the Museu Nacional de Machado de Castro - Part 2

Gemmological Aspects of the Vila Pouca da Beira Monstrance in the Museu Nacional de Machado de Castro - Part 1

Diamante com 910 quilates descoberto no Lesotho

Emeralds for Fauré, Rubies for Stravinsky and Diamonds for Tchaikovsky