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The Wittelsbach Blue

This article describes what is known about the Wittelsbach Blue since it was first reported in 1666, and the gemological information released to date on this diamond.

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Raman Investigations on Two Historical Objects from Basel Cathedral: The Reliquary Cross and Dorothy Monstrance

Two ecclesiastical objects of the late Gothic period (1350–1520) were investigated to identify the gemstones that adorn them.

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Leigha: The Creation of a Three-Dimensional Intarsia Sculpture

This article illustrates the process of creating a contemporary three-dimensional intarsia sculpture.

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Emerald and Gold Treasures of the Spanish Galleon Nuestra Señora de Atocha

During the 1970s and 1980s, treasure hunters discovered the centuries-old remains of the sunken Spanish galleons Nuestra Señora de Atocha and Santa Margarita.

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An Examination of Four Important Gems

Several famous and historical gemstones in the Smithsonian's collection are examined and reported on.

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Gemstone Carving in China: Winds of Change

Chinese master carvers have produced some of the world's most sophisticated gemstone carvings.

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The Pearl in the Chicken: Pearl Recipes in Papyrus Holmiensis

Several pearl-in-chicken cleaning experiments are carried out to test the validity of recipes from an ancient Egyptian source.

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Padparadscha: What's in a Name?

An examination of the term used to describe a sapphire the color of a lotus blossom.

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Jade Forms from Ancient China

This article briefly examines some of the symbols used in jade carved in China.

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Lapis-Lazuli from Sar-E-Sang, Badakhshan, Afghanistan

apis-lazuli is an ornamental stone (figure 1) that has been found in the artifacts of some of the oldest known civilizations.

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